US2672806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator valve
Assignee: North American Aviation Corp
•
Filing: 1950-06-05
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Granted: 1954-03-23
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Expires: 1970-06-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Vehige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:19
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/065; F16; F16K; F16K27/00; F16K27/02; B; B64; B64D; B64D13/00; B64D2013/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US854595A
Cited
GB190916654A
Cited
GB360727A
Cited
DE662360C
Cited
GB520452A
Cited
US2462989A
Cited
US2524974A
Cited
US2489011A
Cited
US2596909A
Cited
FR987035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |