US2452775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple pneumatic clutch
Assignee: WOOLDRIDGE Manufacturing Co
•
Filing: 1943-07-19
•
Granted: 1948-11-02
•
Expires: 1963-07-19
Abstract
No abstract record available.
Inventors
- 👤 Lawrence B Lindsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:14
CPC Classifications
F; F16; F16D; F16D21/00; F16D21/02; F16D21/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US876609A
Cited
US1362373A
Cited
US1520733A
Cited
US1520734A
Cited
US1431683A
Cited
US2055970A
Cited
US2092580A
Cited
US2178280A
Cited
US2270507A
Cited
US2345531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |