US1840666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprag attachment for wheeled trucks
Assignee: SARGENT MACHINE Co
•
Filing: 1929-11-11
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Granted: 1932-01-12
•
Expires: 1949-11-11
Abstract
No abstract record available.
Inventors
- 👤 John P Grundon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:27
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/08; E02F9/085; B; B60; B60T; B60T3/00; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-01-11 | 1935-07-13 | 1936-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-11 | 1939-07-13 | 1940-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-11 | 1943-07-13 | 1944-01-12 | $7700.00 | Window Closed / Lapsed |