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Patent US1690181A successfully refreshed from Google Patents.
US1690181A
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Hydraulic hoist
Assignee: American Hoist and Derrick Co
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Filing: 1924-05-12
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Granted: 1928-11-06
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Expires: 1944-05-12
Abstract
No abstract record available.
Inventors
- 👤 John E Sederholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/44; B66F3/24; B66F3/242; F; F15; F15B; F15B15/00; F15B15/18; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/5383
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) | 1931-11-06 | 1932-05-07 | 1932-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-11-06 | 1936-05-07 | 1936-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-11-06 | 1940-05-07 | 1940-11-06 | $7700.00 | Window Closed / Lapsed |