Patent US2680503A successfully refreshed from Google Patents.
US2680503A
Expired / Lapsed
US
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Metal paneling
Assignee: ACF Industries Inc
•
Filing: 1947-11-14
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Granted: 1954-06-08
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Expires: 1967-11-14
Abstract
No abstract record available.
Inventors
- 👤 Allen W Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:27
CPC Classifications
B; B60; B60R; B60R13/00; B62; B62D; B62D29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1991016A
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US1976968A
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US1987361A
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US2099211A
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US2150130A
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US2148434A
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US2148858A
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US2480321A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |