US2755252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partially-acetylated polyvinyl alco-
Assignee: —
•
Filing: —
•
Granted: 1956-07-17
•
Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:58
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/0005; C11D3/0036; C11D3/37; C11D3/3703; C11D3/3707; C11D3/3746; C11D3/3753; C11D3/3757; C11D3/3769; C11D3/3776; C11D3/378; C11D2111/00; C11D2111/10; C11D2111/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2226075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |