Patent US1920118A successfully refreshed from Google Patents.
US1920118A
Expired / Lapsed
US
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Apparatus for making flowed films and sheets
Assignee: Celluloid Corp
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Filing: 1928-07-19
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Granted: 1933-07-25
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Expires: 1948-07-19
Abstract
No abstract record available.
Inventors
- 👤 James F Walsh
- 👤 John H Stevens
- 👤 Flynn Kirtland
- 👤 Amerigo F Caprio
- 👤 Thomas E Alcorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/03; B29C48/07; B29C48/08; B29C48/91
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) | 1936-07-24 | 1937-01-23 | 1937-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-24 | 1941-01-23 | 1941-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-24 | 1945-01-23 | 1945-07-25 | $7700.00 | Window Closed / Lapsed |