US1528291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of plastic materials or articles having a basis of cellulose acetate
Assignee: Henry Dreyfuss Associates LLC
•
Filing: 1921-10-13
•
Granted: 1925-03-03
•
Expires: 1941-10-13
Abstract
No abstract record available.
Inventors
- 👤 Dreyfus Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:34
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/12
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) | 1928-03-02 | 1928-09-01 | 1929-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-03-02 | 1932-09-01 | 1933-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-03-02 | 1936-09-01 | 1937-03-03 | $7700.00 | Window Closed / Lapsed |