Patent US2371981A successfully refreshed from Google Patents.
Patent US3754100A successfully refreshed from Google Patents.
AG Communication Systems Corp
AG CommuniActive Patents
0
Total Holdings
34
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4658822A | Aneurysm clip | Expired / Lapsed | 1985-12-31 | 1987-04-21 | 4 | Details |
| US4531215A | Validity checking arrangement for extended memory mapping o… | Expired / Lapsed | 1983-06-22 | 1985-07-23 | 7 | Details |
| US4395753A | Allocation controller providing for access of multiple comm… | Expired / Lapsed | 1980-06-26 | 1983-07-26 | 15 | Details |
| US4303960A | Electrostatic discharge-protected switch | Expired / Lapsed | 1979-12-31 | 1981-12-01 | 9 | Details |
| US4049916A | Ring detector circuit for centrally located answering and r… | Expired / Lapsed | 1975-06-20 | 1977-09-20 | 8 | Details |
| US4031328A | Conferencing arrangement for use in a PCM system | Expired / Lapsed | 1975-09-18 | 1977-06-21 | 6 | Details |
| US4027259A | Line equalizer with differentially controlled complementary… | Expired / Lapsed | 1976-06-14 | 1977-05-31 | 19 | Details |
| US4025720A | Digital bit rate converter | Expired / Lapsed | 1975-05-30 | 1977-05-24 | 6 | Details |
| US3993953A | Apparatus and method for digitally generating a modified du… | Expired / Lapsed | 1975-10-17 | 1976-11-23 | 12 | Details |
| US3965307A | Electronic tone ringer | Expired / Lapsed | 1974-05-28 | 1976-06-22 | 6 | Details |
| US3959775A | Multiprocessing system implemented with microprocessors | Expired / Lapsed | 1974-08-05 | 1976-05-25 | 5 | Details |
| US3921141A | Malfunction monitor control circuitry for central data proc… | Expired / Lapsed | 1973-09-14 | 1975-11-18 | 8 | Details |
| US3867585A | Electronic tone ringer | Expired / Lapsed | 1973-08-02 | 1975-02-18 | 9 | Details |
| US3866184A | Timing monitor circuit for central data processor of digita… | Expired / Lapsed | 1973-08-31 | 1975-02-11 | 17 | Details |
| US3863025A | Data transmission method | Expired / Lapsed | 1973-04-25 | 1975-01-28 | 12 | Details |
| US3851311A | Arrangement and method for protecting a common highway from… | Expired / Lapsed | 1973-09-17 | 1974-11-26 | 6 | Details |
| US3845425A | Method and apparatus for providing conditional and uncondit… | Expired / Lapsed | 1973-06-15 | 1974-10-29 | 11 | Details |
| US3839599A | Line variation compensation system for synchronized pcm dig… | Expired / Lapsed | 1972-11-10 | 1974-10-01 | 7 | Details |
| US3838398A | Maintenance control arrangement employing data lines for tr… | Expired / Lapsed | 1973-06-15 | 1974-09-24 | 10 | Details |
| US3831151A | Sense line processor with priority interrupt arrangement fo… | Expired / Lapsed | 1973-04-04 | 1974-08-20 | 19 | Details |
| US3828321A | System for reconfiguring central processor and instruction … | Expired / Lapsed | 1973-03-15 | 1974-08-06 | 13 | Details |
| US3812337A | Sequential control circuit having improved fault detection … | Expired / Lapsed | 1973-04-06 | 1974-05-21 | 27 | Details |
| US3812299A | Arrangement for protecting a common highway in a common con… | Expired / Lapsed | 1973-03-28 | 1974-05-21 | 9 | Details |
| US3805019A | Energy distribution system | Expired / Lapsed | 1972-08-24 | 1974-04-16 | 11 | Details |
| US3805038A | Data handling system maintenance arrangement for processing… | Expired / Lapsed | 1972-07-12 | 1974-04-16 | 17 | Details |
| US3786436A | Memory expansion arrangement in a central processor | Expired / Lapsed | 1973-03-14 | 1974-01-15 | 13 | Details |
| US3781484A | Path selection technique for electronic switching network | Expired / Lapsed | 1971-12-23 | 1973-12-25 | 11 | Details |
| US3745288A | Flexible printed wiring switch | Expired / Lapsed | 1972-08-07 | 1973-07-10 | 10 | Details |
| US3721769A | Call metering for pabx telephone system | Expired / Lapsed | 1971-07-22 | 1973-03-20 | 7 | Details |
| US3714403A | Computer implemented method of detecting and isolating elec… | Expired / Lapsed | 1971-09-01 | 1973-01-30 | 7 | Details |
| US3638038A | Tone detector control circuit | Expired / Lapsed | 1970-10-12 | 1972-01-25 | 10 | Details |
| US3624305A | Communication switching network hold and extra control cond… | Expired / Lapsed | 1970-07-13 | 1971-11-30 | 15 | Details |
| US3624611A | Stored-logic real time monitoring and control system | Expired / Lapsed | 1970-03-09 | 1971-11-30 | 9 | Details |
| US3618015A | Apparatus for discriminating between errors and faults | Expired / Lapsed | 1970-06-30 | 1971-11-02 | 21 | Details |