US2492151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selector cock
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1943-11-22
•
Granted: 1949-12-27
•
Expires: 1963-11-22
Abstract
No abstract record available.
Inventors
- 👤 Thor O Holm
- 👤 Russell R Fike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:26
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/087; F16K11/0873; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1243237A
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US1492883A
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US1724686A
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US1608412A
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US1906313A
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US1972821A
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US1999496A
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DE665650C
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US2198386A
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US2226169A
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US2227542A
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US2233840A
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US2240074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |