Patent US3248753A successfully refreshed from Google Patents.
US3248753A
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Apparatus for simultaneously biaxially stretching thermoplastic film
Assignee: Asahi Kasei Corp
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Filing: 1961-09-05
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Granted: 1966-05-03
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Kobayashi Yuji
- 👤 Fukuma Noboru
- 👤 Yamada Saburoe
- 👤 Kitaoka Atsushi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:12
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/20; B29C55/10; B29C55/12; B29C55/16; B29C55/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2923966A
Cited
US2618012A
Cited
US2755533A
Cited
US2728941A
Cited
US2841820A
Cited
US3014234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |