US2580481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Farm tractor
Assignee: Allis Chalmers Corp
•
Filing: 1948-04-05
•
Granted: 1952-01-01
•
Expires: 1968-04-05
Abstract
No abstract record available.
Inventors
- 👤 Walter F Strehlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:46
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/04; B62D49/06; B62D49/0678; Y; Y10; Y10S; Y10S180/00; Y10S180/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US729737A
Cited
US1415356A
Cited
US1566229A
Cited
US1648076A
Cited
US1903694A
Cited
US1818468A
Cited
AT125793B
Cited
US1915816A
Cited
DE642192C
Cited
US2074685A
Cited
US2066666A
Cited
US2173419A
Cited
US2305305A
Cited
US2374911A
Cited
US2378615A
Cited
US2413355A
Cited
US2513942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |