US2772691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow regulator
Assignee: North American Aviation Corp
•
Filing: 1953-04-22
•
Granted: 1956-12-04
•
Expires: 1973-04-22
Abstract
No abstract record available.
Inventors
- 👤 Hoffman James David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:43
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; G05D7/014; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3421; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/8593; Y10T137/87265; Y10T137/8733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US108162A
Cited
US1361180A
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US1063933A
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US1290122A
Cited
US1659704A
Cited
US1802720A
Cited
US1944088A
Cited
US2022143A
Cited
US2647531A
Cited
US2678066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |