Patent US2880571A successfully refreshed from Google Patents.
US2880571A
Expired / Lapsed
US
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Devices for varying the power and drive of internal combustion engine vehicles
Assignee: Individual
•
Filing: 1954-01-05
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Granted: 1959-04-07
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Expires: 1974-01-05
Abstract
No abstract record available.
Inventors
- 👤 Glamann Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:18
CPC Classifications
F; F02; F02D; F02D19/00; F02D19/12; F02B; F02B37/00; F02B37/04; F02B37/10; F02B37/105; F02B37/12; F02B37/16; F02B39/00; F02B39/02; F02B39/04; F02B39/06; F02B39/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2149785A
Cited
US2467077A
Cited
US2497338A
Cited
US2620621A
Cited
FR929461A
Cited
US2621472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |