US2571457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of spinning filaments
Assignee: Individual
•
Filing: 1950-10-23
•
Granted: 1951-10-16
•
Expires: 1970-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ladisch Rolf Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:09
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08; D01D5/098; D01D5/0985; C; C03; C03B; C03B37/00; C03B37/01; C03B37/06; C03B37/075; C03C; C03C13/00; C03C14/00; C03C14/004; D01D1/00; D01D1/06; D01D4/00; D01D4/02; D01D5/04; C03C2214/00; C03C2214/04; C03C2214/08; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S264/75; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2039306A
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US1955825A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |