Patent JPS5584464A successfully refreshed from Google Patents.
US1939261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulose acetate materials
Assignee: CELANCES Corp OF AMERICAN
•
Filing: 1929-12-24
•
Granted: 1933-12-12
•
Expires: 1949-12-24
Abstract
No abstract record available.
Inventors
- 👤 Hall Archibald John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:51
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/68; D06M11/70; D06M11/71; A; A61; A61C; A61C13/00; A61C13/225; A61C13/265; A61C13/2653; D06M11/07; D06M11/11; D06M11/13; D06M11/155; D06M11/17; D06M11/32; D06M11/36; D06M11/48; D06M11/51; D06M11/53; D06M11/55; D06M11/56; D06M11/57; D06M11/58; D06M11/64; D06M11/65; D06M11/67
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) | 1936-12-11 | 1937-06-12 | 1937-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-11 | 1941-06-12 | 1941-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-11 | 1945-06-12 | 1945-12-12 | $7700.00 | Window Closed / Lapsed |