US3372996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater gas generator
Assignee: Foote Mineral Co
•
Filing: 1963-10-14
•
Granted: 1968-03-12
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Wayne T Barrett
- 👤 Charles L Scheer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:44
CPC Classifications
B; B01; B01J; B01J7/00; B01J7/02; C; C01; C01B; C01B3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |