US2044356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making celluloid articles
Assignee: DuPont Viscoloid Co
•
Filing: 1934-11-14
•
Granted: 1936-06-16
•
Expires: 1954-11-14
Abstract
No abstract record available.
Inventors
- 👤 Charles R Keeran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:35
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/0014; B29C63/00; B29C63/02; B29C69/00; B29C48/00; B29C48/001; B29C48/03; B29C48/09; B29C48/12; B29C48/15; B29K; B29K2001/00; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1043; Y10T156/1089
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1939-06-16 | 1939-12-16 | 1940-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-16 | 1943-12-16 | 1944-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-16 | 1947-12-16 | 1948-06-16 | $7700.00 | Window Closed / Lapsed |