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Patent US3411949A successfully refreshed from Google Patents.
US3411949A
Expired / Lapsed
US
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Method and apparatus for the manufacture of pyrolytic fibers
Assignee: United States Department of the Air Force
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Filing: 1965-08-13
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Granted: 1968-11-19
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Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Hough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:22
CPC Classifications
B; B82; B82Y; B82Y30/00; D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/127; D01F9/1273; D01F9/1275; D01F9/1271; D01F9/1272; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |