Patent US2448054A successfully refreshed from Google Patents.
US2286706A
Expired / Lapsed
US
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Door and step mechanism
Assignee: Yellow Truck and Coach Manufacturing Co
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Filing: 1940-10-11
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Granted: 1942-06-16
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Expires: 1960-10-11
Abstract
No abstract record available.
Inventors
- 👤 Dwight E Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:02
CPC Classifications
B; B60; B60R; B60R3/00; B60R3/02; B60J; B60J5/00; B60J5/04
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) | 1945-06-15 | 1945-12-15 | 1946-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-15 | 1949-12-15 | 1950-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-15 | 1953-12-15 | 1954-06-16 | $7700.00 | Window Closed / Lapsed |