Patent US2811139A successfully refreshed from Google Patents.
US2811139A
Expired / Lapsed
US
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Power transmission device
Assignee: ROME GRADER Corp
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Filing: 1949-07-07
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Granted: 1957-10-29
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Expires: 1969-07-07
Abstract
No abstract record available.
Inventors
- 👤 Anthony L Lado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:18
CPC Classifications
F; F16; F16H; F16H43/00; E; E02; E02F; E02F9/00; E02F9/08; E02F9/10; E02F9/12; E02F9/121; E02F9/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US131135A
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US2195607A
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US856651A
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US1286122A
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US1400236A
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US1839085A
Cited
US2195306A
Cited
US2340169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |