US2079094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for opening staple fibers
Assignee: Celanese Corp
•
Filing: 1932-06-01
•
Granted: 1937-05-04
•
Expires: 1952-06-01
Abstract
No abstract record available.
Inventors
- 👤 Whitehead William
- 👤 Albert W Keight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:39
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/02; D01G1/04; Y; Y10; Y10S; Y10S57/00; Y10S57/901
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) | 1940-05-03 | 1940-11-02 | 1941-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-03 | 1944-11-02 | 1945-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-03 | 1948-11-02 | 1949-05-04 | $7700.00 | Window Closed / Lapsed |