US3451205A
Expired / Lapsed
US
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Apparatus and method for unwinding a filamentary material
Assignee: Electrothermal Engineering Ltd
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Filing: 1967-10-26
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Granted: 1969-06-24
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Expires: 1987-10-26
Abstract
No abstract record available.
Inventors
- 👤 George William Toomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:14
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/02; B65H59/06; B21; B21C; B21C47/00; B21C47/34; B21C47/345; D; D02; D02G; D02G3/00; D02G3/22; D02G3/26; D02G3/28; D02G3/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1949484A
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US2237062A
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US2365660A
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US2466797A
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US2659108A
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US2831313A
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US2947136A
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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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |