Patent US2747115A successfully refreshed from Google Patents.
US2747115A
Expired / Lapsed
US
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Variable ratio transmission responsive to speed of load
Assignee: THOMAS D BOWES
•
Filing: 1953-03-17
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Granted: 1956-05-22
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Expires: 1973-03-17
Abstract
No abstract record available.
Inventors
- 👤 Schulte Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:03
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190926574A
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US1903231A
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GB341201A
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US1990566A
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US2223210A
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US2193214A
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US2258005A
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US2441605A
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US2465006A
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US2503916A
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US2666492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |