US2234330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing extensible slivers or rovings and means therefor
Assignee: WALTHER H DUISBERG
•
Filing: 1938-12-07
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Granted: 1941-03-11
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Expires: 1958-12-07
Abstract
No abstract record available.
Inventors
- 👤 Zetzsche Walther
- 👤 Schiele Franz
- 👤 Ludwig Georg
- 👤 Rodenacker Wolf
- 👤 Baumann Emil
- 👤 Hartmuth Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:10
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/06; D01G1/10; Y; Y10; Y10T; Y10T29/00; Y10T29/11; Y10T29/1106; Y10T29/1131; Y10T29/115; Y10T29/1194; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0448; Y10T83/0605; Y10T83/202; Y10T83/2092; Y10T83/2192; Y10T83/384; Y10T83/392
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-10 | 1944-09-09 | 1945-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-10 | 1948-09-09 | 1949-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-10 | 1952-09-09 | 1953-03-11 | $7700.00 | Window Closed / Lapsed |