US2875839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless track convertible chassis
Assignee: Individual
•
Filing: 1955-11-14
•
Granted: 1959-03-03
•
Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Newton H Spinks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:10
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US946627A
Cited
US1250677A
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US1621275A
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US1803866A
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US1903968A
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US2048580A
Cited
US2129340A
Cited
US2620041A
Cited
US2583358A
Cited
US2701728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |