US2647601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operated friction clutch
Assignee: United States Department of the Navy
•
Filing: 1950-06-10
•
Granted: 1953-08-04
•
Expires: 1970-06-10
Abstract
No abstract record available.
Inventors
- 👤 Franklin S Malick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:29
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US321755A
Cited
US762622A
Cited
US1746365A
Cited
US1706600A
Cited
US2405642A
Cited
US2394104A
Cited
US2463859A
Cited
US2573135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |