US2954833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable double track tractor
Assignee: EUGENE L DAVIDSON
•
Filing: 1958-04-14
•
Granted: 1960-10-04
•
Expires: 1978-04-14
Abstract
No abstract record available.
Inventors
- 👤 Isaac F Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:37
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/08; B62D55/00; B62D55/08; B62D55/104; B62D55/116; Y; Y10; Y10S; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1131394A
Cited
US1151561A
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US1455466A
Cited
US1708104A
Cited
US1836623A
Cited
US2063035A
Cited
GB636228A
Cited
US2693162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |