Landis and Gyr AG
Landis andActive Patents
0
Total Holdings
21
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1330076A | Watthour meters | Expired / Lapsed | 1972-01-24 | — | 0 | Details |
| DE1064614B | Arrangement for increasing the response sensitivity of resp… | Expired / Lapsed | 1957-12-12 | — | 0 | Details |
| GB396182A | An improved apparatus for the transmission to a distance of… | Expired / Lapsed | 1932-05-05 | — | 0 | Details |
| US3834617A | Pid controller for heating, ventilating and air conditionin… | Expired / Lapsed | 1973-05-14 | 1974-09-10 | 23 | Details |
| US3483546A | Power line communication systems | Expired / Lapsed | 1966-04-28 | 1969-12-09 | 0 | Details |
| US3067405A | Method of remotely controlling electric switching arrangeme… | Expired / Lapsed | 1956-11-26 | 1962-12-04 | 0 | Details |
| US3025496A | Receiver for remote control impulses | Expired / Lapsed | 1957-09-26 | 1962-03-13 | 0 | Details |
| US2781975A | Totalizing meter | Expired / Lapsed | 1952-04-14 | 1957-02-19 | 0 | Details |
| US2415653A | Electrical-frequency responsive relay circuit | Expired / Lapsed | 1943-02-18 | 1947-02-11 | 0 | Details |
| US2405121A | Counting device for overvoltage | Expired / Lapsed | 1943-08-05 | 1946-08-06 | 0 | Details |
| US2379631A | Remote control installation | Expired / Lapsed | 1941-07-05 | 1945-07-03 | 0 | Details |
| US2263389A | Remote control system | Expired / Lapsed | 1938-09-20 | 1941-11-18 | 0 | Details |
| US2229097A | Selective remote control apparatus | Expired / Lapsed | 1938-05-26 | 1941-01-21 | 0 | Details |
| US2203358A | Selective remote control | Expired / Lapsed | 1937-12-21 | 1940-06-04 | 0 | Details |
| US2115602A | Control mechanism for coin control switches | Expired / Lapsed | 1934-10-02 | 1938-04-26 | 0 | Details |
| US2101269A | Remote control system | Expired / Lapsed | 1934-09-11 | 1937-12-07 | 0 | Details |
| US2018858A | Summation meter | Expired / Lapsed | 1930-11-25 | 1935-10-29 | 0 | Details |
| DE566963C | Helical or spiral wound bimetallic spring | Expired / Lapsed | 1930-04-27 | 1933-01-03 | 0 | Details |
| US1843677A | Induction meter | Expired / Lapsed | 1931-03-30 | 1932-02-02 | 0 | Details |
| US1801302A | Relay-circuit meter control device | Expired / Lapsed | 1927-02-04 | 1931-04-21 | 0 | Details |
| US1598739A | Recording device in periodically-recording apparatus | Expired / Lapsed | 1924-08-20 | 1926-09-07 | 0 | Details |