Patent US3373553A successfully refreshed from Google Patents.
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 22:29
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2463619A
Cited
US2432355A
Cited
US2675908A
Cited
US2681729A
Cited
US2777276A
Cited
US2974363A
Cited
US2837889A
Cited
US3033479A
Cited
US3094262A
Cited
US3087299A
Cited
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 |