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Patent US2952964A successfully refreshed from Google Patents.
US2952964A
Expired / Lapsed
US
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False twist device for curling thermoplastic yarn
Assignee: Akzona Inc
•
Filing: 1954-07-08
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Granted: 1960-09-20
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Expires: 1974-07-08
Abstract
No abstract record available.
Inventors
- 👤 Conrad Joseph Gonsalves
- 👤 Cloux Henri Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:19
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/0266; D02G1/04; D02G1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1126042A
Cited
GB191310327A
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US2111209A
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US2111211A
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US2244832A
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US2463620A
Cited
DE836762C
Cited
US2863280A
Cited
US2830431A
Cited
US2732681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |