Patent US2931092A successfully refreshed from Google Patents.
US2931092A
Expired / Lapsed
US
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Cross spring flexure pivot and process of making the same
Assignee: Individual
•
Filing: 1957-01-14
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Granted: 1960-04-05
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Expires: 1977-01-14
Abstract
No abstract record available.
Inventors
- 👤 Paul E Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:00
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/12; G; G01; G01G; G01G21/00; Y; Y10; Y10S; Y10S177/00; Y10S177/09; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49789; Y10T29/49796; Y10T403/00; Y10T403/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |