US2640898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety cutoff switch for tractors
Assignee: Individual
•
Filing: 1950-04-25
•
Granted: 1953-06-02
•
Expires: 1970-04-25
Abstract
No abstract record available.
Inventors
- 👤 Gerald C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:47
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/0692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US548941A
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US1566508A
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US982869A
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US1220982A
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US1262456A
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US1326369A
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US1658325A
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US1855838A
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US2250754A
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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) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |