US2289232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing filamentary structures
Assignee: EIDP Inc
•
Filing: 1939-07-14
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Granted: 1942-07-07
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Expires: 1959-07-14
Abstract
No abstract record available.
Inventors
- 👤 Babcock Dale Friend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/227; B; B41; B41J; B41J29/00; B41J29/46; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D02J1/225; Y; Y10; Y10S; Y10S425/00; Y10S425/017
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) | 1945-07-06 | 1946-01-05 | 1946-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-06 | 1950-01-05 | 1950-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-06 | 1954-01-05 | 1954-07-07 | $7700.00 | Window Closed / Lapsed |