Patent US2561833A successfully refreshed from Google Patents.
US2561833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam released clutch
Assignee: Twin Disc Inc
•
Filing: 1948-06-12
•
Granted: 1951-07-24
•
Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 Lloyd J Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:03
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/38; F16D13/46; F16D13/48; F16D13/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE134695C
Cited
US890810A
Cited
US1450202A
Cited
US1407384A
Cited
US1985422A
Cited
US2070065A
Cited
US2174240A
Cited
US2287608A
Cited
US2367390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |