US3371739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for variably controlling the buoyancy of a seismic detection streamer
Assignee: WHITEHALL ELECTRONICS CORP OF
•
Filing: 1966-05-23
•
Granted: 1968-03-05
•
Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:44
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/38; G01V1/3817; G01V1/3826
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2735303A
Cited
US2371404A
Cited
US2359366A
Cited
US2465696A
Cited
US2632150A
Cited
US2791757A
Cited
US3301209A
Cited
US3308425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |