Patent US2680573A successfully refreshed from Google Patents.
US2680573A
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US
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Automatic tension device
Assignee: Individual
•
Filing: 1950-10-18
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Granted: 1954-06-08
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Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Edward H Monkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:28
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/195; B65H23/1955; B21; B21C; B21C47/00; B21C47/003; B65H18/00; B65H18/08; B65H18/10; B65H18/106; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/414; B65H2301/4148; B65H2301/41485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1849383A
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US2200328A
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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 |