US3416121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearingless slip ring assembly
Assignee: Boeing North American Inc
•
Filing: 1967-03-07
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Granted: 1968-12-10
•
Expires: 1987-03-07
Abstract
No abstract record available.
Inventors
- 👤 Edward W Nealon
- 👤 Leo D Yeutter
- 👤 Dick B Cahoon
- 👤 Thomas F Brasher
- 👤 John P Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:06
CPC Classifications
H; H01; H01R; H01R39/00; Y; Y10; Y10T; Y10T74/00; Y10T74/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1908764A
Cited
US2149728A
Cited
US2473705A
Cited
GB774419A
Cited
FR1246325A
Cited
US3234495A
Cited
US3297973A
Cited
US3316519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |