US2421135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for conditioning warp, threads, yarns, and the like
Assignee: Individual
•
Filing: 1945-02-28
•
Granted: 1947-05-27
•
Expires: 1965-02-28
Abstract
No abstract record available.
Inventors
- 👤 Harold J Walter
- 👤 Paul R Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:37
CPC Classifications
D; D03; D03J; D03J1/00; D03J2700/00; D03J2700/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1705212A
Cited
US1460972A
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US1921396A
Cited
US2066781A
Cited
US2108404A
Cited
US2114449A
Cited
US2166548A
Cited
US2354624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |