US2637568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering knuckle
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1951-04-11
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Granted: 1953-05-05
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Expires: 1971-04-11
Abstract
No abstract record available.
Inventors
- 👤 James H Booth
- 👤 Albert W Gair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:07
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/18; B60; B60G; B60G2200/00; B60G2200/10; B60G2200/14; B60G2200/144; B60G2200/40; B60G2200/44; B60G2206/00; B60G2206/01; B60G2206/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB174755A
Cited
US2226406A
Cited
DE719047C
Cited
US2311125A
Cited
GB579432A
Cited
US2556767A
Cited
US2521335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |