Patent US2973221A successfully refreshed from Google Patents.
US2973221A
Expired / Lapsed
US
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Automobile panel-opening construction
Assignee: Individual
•
Filing: 1957-12-24
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Granted: 1961-02-28
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Expires: 1977-12-24
Abstract
No abstract record available.
Inventors
- 👤 Edward L Blackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:41
CPC Classifications
B; B60; B60J; B60J7/00; B60J7/08; B60J7/16; B60J7/1628; B60J7/1635; B60J7/1642; Y; Y10; Y10T; Y10T292/00; Y10T292/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US709607A
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US1085347A
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US2253252A
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US2325225A
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US2471635A
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US2499749A
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US2584480A
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US2651542A
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US2815977A
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US2809862A
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US2857198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |