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Patent US2687900A successfully refreshed from Google Patents.
US2687900A
Expired / Lapsed
US
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Drawbar lock
Assignee: Individual
•
Filing: 1952-09-22
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Granted: 1954-08-31
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Expires: 1972-09-22
Abstract
No abstract record available.
Inventors
- 👤 Junior W Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:35
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/42; B60D1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |