Patent US2353639A successfully refreshed from Google Patents.
US2353639A
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US
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Method of and apparatus for controlling spooling motors
Assignee: AT&T Inc
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Filing: 1941-11-28
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Granted: 1944-07-18
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Expires: 1961-11-28
Abstract
No abstract record available.
Inventors
- 👤 Berthold Wolf
- 👤 Wilson W Rea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:32
CPC Classifications
B; B21; B21C; B21C1/00; B21C1/02; B21C1/12; B21C47/00; B21C47/003; B65; B65H; B65H59/00; B65H59/38; B65H59/384
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-07-18 | 1948-01-17 | 1948-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-18 | 1952-01-17 | 1952-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-18 | 1956-01-17 | 1956-07-18 | $7700.00 | Window Closed / Lapsed |