Patent US4034535A successfully refreshed from Google Patents.
US3045658A
Expired / Lapsed
US
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Valve operating mechanism
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1959-12-08
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Granted: 1962-07-24
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Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Achilles C Sampietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:20
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/18; F01L1/181; F01L1/182; F01L1/183; F01L2307/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1526678A
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US1699659A
Cited
US1877051A
Cited
US2036936A
Cited
US2521176A
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US2902014A
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US3016887A
Cited
US2955581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |