US2797774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel chock
Assignee: Dayton Rubber Co
•
Filing: 1952-10-02
•
Granted: 1957-07-02
•
Expires: 1972-10-02
Abstract
No abstract record available.
Inventors
- 👤 Eckhart Charles Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:46
CPC Classifications
B; B60; B60T; B60T3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US838830A
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US1082807A
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US1123718A
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GB205322A
Cited
GB286002A
Cited
US1694316A
Cited
US1893580A
Cited
US2013553A
Cited
US2143553A
Cited
US2297204A
Cited
US2344148A
Cited
US2631463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |