Patent US3457861A successfully refreshed from Google Patents.
US3457861A
Expired / Lapsed
US
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Missile booster pressure control mechanism
Assignee: United States Department of the Navy
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Filing: 1968-01-25
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Granted: 1969-07-29
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Expires: 1988-01-25
Abstract
No abstract record available.
Inventors
- 👤 Sydney R Crockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/74; F02K9/76; F02K9/763; F42; F42B; F42B15/00; F42B15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3038407A
Cited
US2779283A
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US2945442A
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US3026772A
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US3118638A
Cited
US3211095A
Cited
US3160098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |