Patent US2764247A successfully refreshed from Google Patents.
US2764247A
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US
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Self-propelled power unit for driving large power consuming devices
Assignee: Avco Manufacturing Corp
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Filing: 1953-04-22
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Granted: 1956-09-25
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Expires: 1973-04-22
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Wiegman
- 👤 Dudley S King
- 👤 August W Rickenbach
- 👤 Frederic G Rohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:51
CPC Classifications
F; F02; F02D; F02D29/00; F02D2700/00; F02D2700/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB271183A
Cited
US1919227A
Cited
US2001029A
Cited
US2016934A
Cited
US2282597A
Cited
US2291124A
Cited
CH220075A
Cited
US2524598A
Cited
US2375205A
Cited
US2680377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |