Telefonaktiebolaget LM Ericsson AB
TelefonaktActive Patents
0
Total Holdings
51
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0003009A2 | A method and an apparatus for transferring digital informat… | Expired / Lapsed | 1978-12-19 | — | 9 | Details |
| DE1234071B | Device for counting and classifying vehicles | Expired / Lapsed | 1962-05-02 | — | 0 | Details |
| GB586753A | Improvements in or relating to automatic telephone systems | Expired / Lapsed | 1944-01-21 | — | 0 | Details |
| US4669107A | Method of increasing the number of call options in a mobile… | Expired / Lapsed | 1986-04-16 | 1987-05-26 | 4 | Details |
| US4622665A | Synchronizing system | Expired / Lapsed | 1983-09-14 | 1986-11-11 | 3 | Details |
| US4457579A | Arrangement to reduce influence of diffuse and direct refle… | Expired / Lapsed | 1979-08-14 | 1984-07-03 | 7 | Details |
| US3976831A | Method for transmitting pictures at a picture telephone tra… | Expired / Lapsed | 1974-12-06 | 1976-08-24 | 3 | Details |
| US3940566A | Arrangement for preventing interruptions in a time division… | Expired / Lapsed | 1974-09-12 | 1976-02-24 | 6 | Details |
| US3902014A | Circuit arrangement for regenerating the modulation timing … | Expired / Lapsed | 1973-08-15 | 1975-08-26 | 4 | Details |
| US3818142A | Device for production of switching order information for tr… | Expired / Lapsed | 1973-01-29 | 1974-06-18 | 3 | Details |
| US3761884A | Arrangement for synchronizing a number of co-operating comp… | Expired / Lapsed | 1971-11-04 | 1973-09-25 | 4 | Details |
| US3643030A | Method for transferring information in the form of time sep… | Expired / Lapsed | 1970-02-06 | 1972-02-15 | 18 | Details |
| US3628158A | Arrangement at parallelly working machines | Expired / Lapsed | 1969-10-27 | 1971-12-14 | 8 | Details |
| US3622916A | Periodic frequency characteristic filter for filtering peri… | Expired / Lapsed | 1970-02-24 | 1971-11-23 | 6 | Details |
| US3599158A | Method for moving variable data during operation from a fir… | Expired / Lapsed | 1968-12-18 | 1971-08-10 | 2 | Details |
| US3524940A | Telephone plant with satellite exchanges connected by radia… | Expired / Lapsed | 1966-10-17 | 1970-08-18 | 0 | Details |
| US3517174A | Method of localizing a fault in a system including at least… | Expired / Lapsed | 1966-11-02 | 1970-06-23 | 0 | Details |
| US3475732A | Means for activating a certain instruction out of a plurali… | Expired / Lapsed | 1966-12-27 | 1969-10-28 | 0 | Details |
| US3405395A | Circuit arrangement for activating an electric circuit by m… | Expired / Lapsed | 1966-04-12 | 1968-10-08 | 0 | Details |
| US3382409A | Overcurrent-and overvoltage-protection arrangement | Expired / Lapsed | 1966-05-11 | 1968-05-07 | 2 | Details |
| US3335223A | Arrangement for automatic equalization of the distortion in… | Expired / Lapsed | 1963-08-23 | 1967-08-08 | 2 | Details |
| US3297952A | Circuit arrangement for producing a pulse train in which th… | Expired / Lapsed | 1965-05-28 | 1967-01-10 | 2 | Details |
| US3287657A | Phase controlled oscillator with a variable synchronizing r… | Expired / Lapsed | 1964-04-06 | 1966-11-22 | 0 | Details |
| US3235861A | Monitoring system for monitoring the potential of conductors | Expired / Lapsed | 1960-10-06 | 1966-02-15 | 2 | Details |
| US3231677A | Inter-register signalling for electronic telephone system | Expired / Lapsed | 1962-04-13 | 1966-01-25 | 2 | Details |
| US3146313A | Amplifier arrangement for loudspeaking telephones | Expired / Lapsed | 1962-05-31 | 1964-08-25 | 2 | Details |
| US3105118A | Mobile radio stations interconnected with a wire telephone … | Expired / Lapsed | 1960-04-13 | 1963-09-24 | 2 | Details |
| US2820138A | Relay station for transmitting frequency modulated signals | Expired / Lapsed | 1954-10-06 | 1958-01-14 | 0 | Details |
| US2801374A | Relay device | Expired / Lapsed | 1956-09-05 | 1957-07-30 | 0 | Details |
| US2800523A | Device for pressure-tight end sealing of cables | Expired / Lapsed | 1953-10-21 | 1957-07-23 | 0 | Details |
| US2782307A | Electronic switching device for use in radio systems and mu… | Expired / Lapsed | 1951-10-10 | 1957-02-19 | 0 | Details |
| FR1127424A | Method and device for estimating probable trajectories of m… | Expired / Lapsed | 1955-02-23 | 1956-12-17 | 0 | Details |
| US2758263A | Contact device | Expired / Lapsed | 1952-10-03 | 1956-08-07 | 0 | Details |
| US2725474A | Oscillation circuit with superconductor | Expired / Lapsed | 1950-08-04 | 1955-11-29 | 0 | Details |
| US2666884A | Rectifier and converter using superconduction | Expired / Lapsed | 1950-08-04 | 1954-01-19 | 0 | Details |
| US2664552A | Device for connection of cables by means of plugs and socke… | Expired / Lapsed | 1951-06-11 | 1953-12-29 | 0 | Details |
| US2583848A | Switching device for the setting of crossbar switches by me… | Expired / Lapsed | 1947-05-23 | 1952-01-29 | 0 | Details |
| US2563807A | Electron discharge apparatus circuit | Expired / Lapsed | 1949-10-13 | 1951-08-14 | 0 | Details |
| US2559746A | Arrangement for night watchman controls | Expired / Lapsed | 1949-04-15 | 1951-07-10 | 0 | Details |
| US2554201A | Key-sending automatic telephone signaling system | Expired / Lapsed | 1947-06-05 | 1951-05-22 | 0 | Details |
| US2542592A | Audio-frequency signaling system | Expired / Lapsed | 1949-01-26 | 1951-02-20 | 0 | Details |
| US2524992A | Frequency modulator | Expired / Lapsed | 1948-03-23 | 1950-10-10 | 0 | Details |
| US2482998A | Switching device for distribution of programs | Expired / Lapsed | 1947-03-25 | 1949-09-27 | 0 | Details |
| US2432600A | Electromagnetic motor | Expired / Lapsed | 1944-09-11 | 1947-12-16 | 0 | Details |
| US2404331A | Electromagnetic motor | Expired / Lapsed | 1942-10-27 | 1946-07-16 | 0 | Details |
| US2357995A | Remote control system | Expired / Lapsed | 1941-04-16 | 1944-09-12 | 0 | Details |
| US2329048A | Counting device with gaseous discharge valves | Expired / Lapsed | 1939-11-06 | 1943-09-07 | 0 | Details |
| US2220427A | Burglar alarm system | Expired / Lapsed | 1937-03-10 | 1940-11-05 | 0 | Details |
| US2182152A | Electric signaling system | Expired / Lapsed | 1937-01-21 | 1939-12-05 | 0 | Details |
| US2148861A | Impression mechanism | Expired / Lapsed | 1935-11-27 | 1939-02-28 | 0 | Details |
| US1845604A | Switching arrangement for automatic telephone systems | Expired / Lapsed | 1930-08-25 | 1932-02-16 | 0 | Details |