Patent US2813435A successfully refreshed from Google Patents.
US2813435A
Expired / Lapsed
US
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Reduction gear transmission
Assignee: BOSTON GEAR WORKS
•
Filing: 1954-10-21
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Granted: 1957-11-19
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Expires: 1974-10-21
Abstract
No abstract record available.
Inventors
- 👤 Martin T Schumb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/025; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19679; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2736210A
Cited
US1246930A
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US1393906A
Cited
US2623406A
Cited
US2606453A
Cited
US2655818A
Cited
US2712761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |