Patent US2947490A successfully refreshed from Google Patents.
US2947490A
Expired / Lapsed
US
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Speed control system for winding machines
Assignee: Akzona Inc
•
Filing: 1954-11-23
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Granted: 1960-08-02
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Expires: 1974-11-23
Abstract
No abstract record available.
Inventors
- 👤 Gonsalves Conrad Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:07
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H59/384; B65H59/385; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2335965A
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US2328322A
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US2402739A
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US2539540A
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US2436557A
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US2598950A
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US2462233A
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US2545534A
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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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |