ENGINEERING LAB Inc
ENGINEERINActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2594767A | Method of seismic surveying | Expired / Lapsed | 1946-02-08 | 1952-04-29 | 0 | Details |
| US2441065A | Apparatus for well logging | Expired / Lapsed | 1945-12-01 | 1948-05-04 | 0 | Details |
| US2419993A | Pumping mechanism | Expired / Lapsed | 1945-01-22 | 1947-05-06 | 0 | Details |
| US2395289A | Method and apparatus for seismic prospecting | Expired / Lapsed | 1943-05-27 | 1946-02-19 | 0 | Details |
| US2376195A | Amplifying apparatus | Expired / Lapsed | 1936-09-15 | 1945-05-15 | 0 | Details |
| US2329558A | Automatic volume control | Expired / Lapsed | 1937-09-07 | 1943-09-14 | 0 | Details |
| US2156198A | Method for seismic prospecting | Expired / Lapsed | 1937-02-15 | 1939-04-25 | 0 | Details |
| US2133786A | Method of and apparatus for determining the dip of the eart… | Expired / Lapsed | 1937-05-07 | 1938-10-18 | 0 | Details |