US3052505A
Expired / Lapsed
US
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Hydrostatic bearing system
Assignee: Bell Aerospace Corp
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Filing: 1961-04-11
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Granted: 1962-09-04
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Expires: 1981-04-11
Abstract
No abstract record available.
Inventors
- 👤 John C Trotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:56
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0662; H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/04; F16C2300/00; F16C2300/10; F16C2300/14; F16C2380/00
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) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |