Patent US2682997A successfully refreshed from Google Patents.
US2682997A
Expired / Lapsed
US
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Take-up control mechanism
Assignee: AT&T Inc
•
Filing: 1950-11-02
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Granted: 1954-07-06
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Expires: 1970-11-02
Abstract
No abstract record available.
Inventors
- 👤 Magnuson Clarence Edwin
- 👤 Waters Daniel Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:14
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B21; B21C; B21C35/00; B21C35/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1816909A
Cited
US2190529A
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US2252353A
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US2271416A
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US2306045A
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US2509250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |