US2761171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile door hinge embodying hold-open and assist means
Assignee: Atwood Vacuum Machine Co
•
Filing: 1952-06-09
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Granted: 1956-09-04
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Expires: 1972-06-09
Abstract
No abstract record available.
Inventors
- 👤 Johnson Agnar
- 👤 Lyle C Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:59
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/1207; E05F1/1215; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2308759A
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US2320752A
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US2341847A
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US2612651A
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US2623236A
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US2580593A
Cited
US2645810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |