US3373553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False-twist apparatus
Assignee: Wyeth Holdings LLC
•
Filing: 1967-01-26
•
Granted: 1968-03-19
•
Expires: 1987-01-26
Abstract
No abstract record available.
Inventors
- 👤 Naumann Herbert Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:25
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2463619A
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US2432355A
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US2675908A
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US2681729A
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US2777276A
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US2974363A
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US2837889A
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US3033479A
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US3094262A
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US3087299A
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US3091910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |