US3050819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of bulked fiber
Assignee: Celanese Corp
•
Filing: 1958-06-03
•
Granted: 1962-08-28
•
Expires: 1978-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Allman
- 👤 Claude E Layman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
D; D02; D02G; D02G1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2332489A
Cited
US2394165A
Cited
US2451919A
Cited
US2669001A
Cited
US2881504A
Cited
GB793711A
Cited
GB790163A
Cited
US2869312A
Cited
US2921358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |