US3453993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prechamber mounting
Assignee: United States Department of the Navy
•
Filing: 1967-09-27
•
Granted: 1969-07-08
•
Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jacob S Saletzki
- 👤 Richard F Reichel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:53
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3125078A
Cited
US1179912A
Cited
US1845620A
Cited
US2148505A
Cited
US2846986A
Cited
US3349758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |