Patent US4090717A successfully refreshed from Google Patents.
US2436746A
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US
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Selective gear reduction units
Assignee: Individual
•
Filing: 1943-07-12
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Granted: 1948-02-24
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Expires: 1963-07-12
Abstract
No abstract record available.
Inventors
- 👤 Charles W Drought
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/001; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/1956; Y10T74/19565; Y10T74/1957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US833848A
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US1297462A
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US1514931A
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US1576702A
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FR694096A
Cited
US2130979A
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US2277614A
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US2363556A
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GB556314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |