Patent US2321108A successfully refreshed from Google Patents.
US2321108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of textile materials
Assignee: Celanese Corp
•
Filing: 1939-06-24
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Granted: 1943-06-08
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Expires: 1959-06-24
Abstract
No abstract record available.
Inventors
- 👤 Schneider George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:01
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; Y; Y10; Y10T; Y10T442/00; Y10T442/50; Y10T442/51; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/69
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) | 1946-06-07 | 1946-12-07 | 1947-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-07 | 1950-12-07 | 1951-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-07 | 1954-12-07 | 1955-06-08 | $7700.00 | Window Closed / Lapsed |