US2671298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Allis Chalmers Corp
•
Filing: 1949-09-10
•
Granted: 1954-03-09
•
Expires: 1969-09-10
Abstract
No abstract record available.
Inventors
- 👤 Rector C Fergason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:15
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; A; A01; A01D; A01D46/00; A01D46/08; A01D46/14; Y; Y10; Y10S; Y10S180/00; Y10S180/90
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |