US2175092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerized nitriles and processes of preparing the same
Assignee: Armour and Co
•
Filing: 1936-07-27
•
Granted: 1939-10-03
•
Expires: 1956-07-27
Abstract
No abstract record available.
Inventors
- 👤 Anderson W Ralston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:35
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/62; C08F20/70
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) | 1942-10-02 | 1943-04-03 | 1943-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-02 | 1947-04-03 | 1947-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-02 | 1951-04-03 | 1951-10-03 | $7700.00 | Window Closed / Lapsed |