Patent US2754656A successfully refreshed from Google Patents.
US2754656A
Expired / Lapsed
US
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Automatic valve
Assignee: Reaction Motors Inc
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Filing: 1952-04-04
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Granted: 1956-07-17
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Expires: 1972-04-04
Abstract
No abstract record available.
Inventors
- 👤 William P Munger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:24
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/56; F02K9/566; F02K9/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2610645A
Cited
US1550376A
Cited
US2261364A
Cited
US2217649A
Cited
GB611934A
Cited
US2505798A
Cited
US2663121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |