US2231927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of artificial structrues and other useful articles from cellulose derivatives
Assignee: Individual
•
Filing: 1936-02-10
•
Granted: 1941-02-18
•
Expires: 1956-02-10
Abstract
No abstract record available.
Inventors
- 👤 Lilienfeld Antonle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:58
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0036; C; C08; C08B; C08B11/00; C08B11/20; C08L; C08L1/00; C08L1/08; D01; D01F; D01F2/00; D01F2/24; D01F2/28; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/09
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) | 1944-02-18 | 1944-08-19 | 1945-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-18 | 1948-08-19 | 1949-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-18 | 1952-08-19 | 1953-02-18 | $7700.00 | Window Closed / Lapsed |