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US2974995A
Expired / Lapsed
US
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Coil tilter
Assignee: AMERICAN FORGE AND MANUFACTURING Co
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Filing: 1958-11-20
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Granted: 1961-03-14
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Expires: 1978-11-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert J Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:48
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/44; B66C1/48; B66C1/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2226789A
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US2390293A
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US2630931A
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US2647650A
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US2718320A
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US2770380A
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US2817450A
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US2851300A
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US2821318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |