US2199927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulosic pellicle
Assignee: EIDP Inc
•
Filing: 1937-03-17
•
Granted: 1940-05-07
•
Expires: 1957-03-17
Abstract
No abstract record available.
Inventors
- 👤 Underwood William Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:45
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/335; D06M13/35; D06M13/368; D06M13/46; D06M13/47
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) | 1943-05-07 | 1943-11-06 | 1944-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-07 | 1947-11-06 | 1948-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-07 | 1951-11-06 | 1952-05-07 | $7700.00 | Window Closed / Lapsed |