US3022876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic clutch
Assignee: Individual
•
Filing: 1958-07-15
•
Granted: 1962-02-27
•
Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Frankel Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:31
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16D55/00; F16D2121/00; F16D2121/18; F16D2121/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1814891A
Cited
US2150950A
Cited
US2375566A
Cited
US2528316A
Cited
US2541979A
Cited
US2706544A
Cited
US2708492A
Cited
US2684744A
Cited
US2796222A
Cited
US2924314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |