Patent US2963185A successfully refreshed from Google Patents.
US2963185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transporting equipment
Assignee: Dempster Brothers Inc
•
Filing: 1956-02-02
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Granted: 1960-12-06
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Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 Harry W Jones
- 👤 George R Dempster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:05
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/64; B60P1/6418; B60P1/6454
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE536878C
Cited
FR696609A
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US1985169A
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US2274895A
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US2264216A
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US2606676A
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US2439085A
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US2621811A
Cited
US2646250A
Cited
US2681790A
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US2724522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |