US2238165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of textile and like materials
Assignee: Celanese Corp
•
Filing: 1937-09-09
•
Granted: 1941-04-15
•
Expires: 1957-09-09
Abstract
No abstract record available.
Inventors
- 👤 Ellis George Holland
- 👤 Stanley Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:43
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/693; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/2254
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) | 1944-04-14 | 1944-10-14 | 1945-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-14 | 1948-10-14 | 1949-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-14 | 1952-10-14 | 1953-04-15 | $7700.00 | Window Closed / Lapsed |