US2938592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic velocity well logging apparatus
Assignee: Jersey Production Research Co
•
Filing: 1953-03-23
•
Granted: 1960-05-31
•
Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Charles J Charske
- 👤 Charles L Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:50
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2712124A
Cited
US2076330A
Cited
US2200476A
Cited
US2271951A
Cited
US2233992A
Cited
US2207281A
Cited
US2238991A
Cited
US2269603A
Cited
US2301458A
Cited
US2461543A
Cited
US2301195A
Cited
US2324378A
Cited
US2436563A
Cited
US2434285A
Cited
US2364209A
Cited
US2438925A
Cited
US2596024A
Cited
US2395902A
Cited
US2530971A
Cited
US2586745A
Cited
US2675086A
Cited
US2648056A
Cited
US2699529A
Cited
US2709918A
Cited
US2704364A
Cited
US2691422A
Cited
US2708485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |