Patent US2493894A successfully refreshed from Google Patents.
US2493894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch and brake mechanism
Assignee: Individual
•
Filing: 1945-08-30
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Granted: 1950-01-10
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Expires: 1965-08-30
Abstract
No abstract record available.
Inventors
- 👤 Minkowitz George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:24
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/22; F16D13/38; F16D13/40; F16D67/00; F16D67/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US508075A
Cited
US909631A
Cited
US1739751A
Cited
GB449639A
Cited
US2133228A
Cited
US2179360A
Cited
US2308680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |