Patent US2527281A successfully refreshed from Google Patents.
US2527281A
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US
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Drive mechanism for self-propelled vehicles
Assignee: PAUL H HOFFKEN
•
Filing: 1946-04-04
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Granted: 1950-10-24
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Expires: 1966-04-04
Abstract
No abstract record available.
Inventors
- 👤 Earl V Varcoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:28
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/14; B; B61; B61C; B61C9/00; B61C9/28; B61C9/30; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19219; Y10T74/19377; Y10T74/19386; Y10T74/19409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE312027C
Cited
US870202A
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US852939A
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US1438319A
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US1447488A
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FR685859A
Cited
US2024688A
Cited
US2424543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |