Patent US2747714A successfully refreshed from Google Patents.
US2747714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-operated clutch-brake mechanism
Assignee: INDUSTRIAL CLUTCH CORP
•
Filing: 1952-03-19
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Granted: 1956-05-29
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Expires: 1972-03-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence M Eason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:16
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/28; B; B30; B30B; B30B15/00; B30B15/10; F16D49/00; F16D49/08; F16D49/12; F16D67/00; F16D67/02; F16D67/04
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |