US3415048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing alternating twist
Assignee: Deutsche Rhodiaceta AG
•
Filing: 1966-03-28
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Granted: 1968-12-10
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Anton Welbers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/26; D02G3/28; D02G3/286; D01; D01H; D01H1/00; D02G1/00; D02G1/02; D02G1/0206; D02G1/024; D01H2700/00; D01H2700/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3105349A
Cited
US2952116A
Cited
US3025656A
Cited
US3022566A
Cited
US3129485A
Cited
US3091909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |