Compteurs Schlumberger SA
CompteursActive Patents
0
Total Holdings
12
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB463330A | Improvements in or relating to the transmission and recepti… | Expired / Lapsed | 1935-06-22 | — | 0 | Details |
| GB437539A | Improvements in or relating to signalling systems wherein t… | Expired / Lapsed | 1934-06-18 | — | 0 | Details |
| US3778619A | Input connections for differential amplifiers | Expired / Lapsed | 1972-03-22 | 1973-12-11 | 6 | Details |
| US3778157A | Optical distance converter | Expired / Lapsed | 1971-11-04 | 1973-12-11 | 11 | Details |
| FR92558E | Astatic optical device for transmitting an electrical signal | Expired / Lapsed | 1967-02-07 | 1968-11-29 | 0 | Details |
| US3329821A | Method and device for measuring the amplitude ratio of two … | Expired / Lapsed | 1963-11-04 | 1967-07-04 | 2 | Details |
| US3146293A | Measuring the mean density of the atmosphere | Expired / Lapsed | 1961-02-20 | 1964-08-25 | 2 | Details |
| US2143933A | Television receiver | Expired / Lapsed | 1935-01-16 | 1939-01-17 | 0 | Details |
| US2142541A | Protection for electric distribution systems | Expired / Lapsed | 1935-09-19 | 1939-01-03 | 0 | Details |
| FR792921A | Improvements to electric welders | Expired / Lapsed | 1935-07-25 | 1936-01-13 | 0 | Details |
| US1996145A | Device for receiving high frequency currents superimposed o… | Expired / Lapsed | 1933-01-19 | 1935-04-02 | 0 | Details |
| FR546233A | Calorimeter recording the calorific value of a gas | Expired / Lapsed | 1922-01-21 | 1922-11-03 | 0 | Details |