Patent US2997146A successfully refreshed from Google Patents.
US2997146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic brake for winches and the like
Assignee: Individual
•
Filing: 1960-01-28
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Granted: 1961-08-22
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Expires: 1980-01-28
Abstract
No abstract record available.
Inventors
- 👤 Chiolerio Francesco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:37
CPC Classifications
B; B66; B66D; B66D5/00; F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/38; F16D59/00; F16D59/02; B66D2700/00; B66D2700/03; F16D2055/0004; F16D2055/0058; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/34; F16D2125/36; F16D2127/00; F16D2127/001; F16D2127/005; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |