Patent US3514653A successfully refreshed from Google Patents.
US3514653A
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US
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Antifriction slipring device
Assignee: OAKLEY A KENDALL
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Filing: 1969-01-21
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Granted: 1970-05-26
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Expires: 1989-01-21
Abstract
No abstract record available.
Inventors
- 👤 Oakley A Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:52
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; H; H01; H01R; H01R39/00; H01R39/64; H01R39/646; H02; H02K; H02K7/00; H02K7/14
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |