US2521486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric clutch and brake mechanism
Assignee: E P LAWSON Co Inc
•
Filing: 1947-07-22
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Granted: 1950-09-05
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Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Seybold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:50
CPC Classifications
F; F16; F16D; F16D51/00; F16D48/00; F16D48/06; F16D48/064; F16D2121/00; F16D2121/18; F16D2121/20; F16D2121/22; F16D2127/00; F16D2127/08; F16D2127/12; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |