Patent US3493087A successfully refreshed from Google Patents.
US3493087A
Expired / Lapsed
US
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Hoist load brake
Assignee: Yale Industrial Products Inc
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Filing: 1968-07-09
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Granted: 1970-02-03
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Expires: 1988-07-09
Abstract
No abstract record available.
Inventors
- 👤 Harvey L Freeman
- 👤 John P Truemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:32
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/127; B; B66; B66D; B66D5/00; B66D2700/00; B66D2700/03; F16D69/00; F16D2069/004; F16D65/128
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |