US2777375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction boosting power lift system
Assignee: Allis Chalmers Corp
•
Filing: 1955-07-11
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Granted: 1957-01-15
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Carlin Robert
- 👤 Edward B Heckenkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/0621; A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/1006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24006E
Cited
US2638045A
Cited
US2672802A
Cited
US2679199A
Cited
US2715864A
Cited
US2722804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |