US2890892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interchangeable front end structure for tractors
Assignee: Allis Chalmers Corp
•
Filing: 1957-04-22
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Granted: 1959-06-16
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Walter F Strehlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:23
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/06; A; A01; A01B; A01B69/00; A01B69/007; B62D49/00; B62D49/06; B62D49/0607; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1776409A
Cited
US2002002A
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US2074685A
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US2208599A
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US2175965A
Cited
US2301152A
Cited
US2394854A
Cited
US2779425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |