Patent US3448357A successfully refreshed from Google Patents.
US3448357A
Expired / Lapsed
US
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Tension control system for a reel drive
Assignee: Westinghouse Electric Corp
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Filing: 1966-08-10
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Granted: 1969-06-03
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Expires: 1986-08-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Dolphin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/195; B65H23/198; B65H2557/00; B65H2557/20; B65H2557/24; B65H2557/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2583148A
Cited
US2583074A
Cited
US2665401A
Cited
US2747148A
Cited
US3189804A
Cited
US3183427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |