Patent US3461199A successfully refreshed from Google Patents.
US3461199A
Expired / Lapsed
US
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Process for improving dimensional stability of tensilized polyester film
Assignee: EIDP Inc
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Filing: 1966-05-03
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Granted: 1969-08-12
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Expires: 1986-05-03
Abstract
No abstract record available.
Inventors
- 👤 David Robert Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:47
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/10; B29C55/12; B29C55/14; B29C55/146; B29C71/00; B29K; B29K2067/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2779684A
Cited
GB851875A
Cited
US2995779A
Cited
GB857896A
Cited
US3061886A
Cited
US3165499A
Cited
US3330897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |