Patent US2578645A successfully refreshed from Google Patents.
US2578645A
Expired / Lapsed
US
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Idler arm pivot joint
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1950-11-30
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Granted: 1951-12-11
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Expires: 1970-11-30
Abstract
No abstract record available.
Inventors
- 👤 Bernard E Ricks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:06
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/16; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32819; Y10T403/32827; Y10T403/32951
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1372327A
Cited
US1004237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |