Patent US3445891A successfully refreshed from Google Patents.
US3445891A
Expired / Lapsed
US
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Apparatus for manufacturing film from thermoplastic resinous film-forming materials
Assignee: Individual
•
Filing: 1966-10-24
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Granted: 1969-05-27
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Expires: 1986-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jon Thordarson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:49
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/885; B29C48/03; B29C48/09; B29C48/10; B29C48/89; B29C48/911; B29C48/9115; B29C48/912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB828851A
Cited
US2966700A
Cited
US3170011A
Cited
US3280429A
Cited
FR1434501A
Cited
US3329999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |