Patent US3067309A successfully refreshed from Google Patents.
US3067309A
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Flexible heat-sealing unit
Assignee: Union Carbide Corp
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Filing: 1958-08-01
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Granted: 1962-12-04
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Expires: 1978-08-01
Abstract
No abstract record available.
Inventors
- 👤 Hyman G Chinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:55
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81451; B29C66/81461; B29C66/81463; B29C66/81467; B29C66/81469; B29C66/816; B29C66/8161; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B29C66/70; B29C66/71; B29C66/82; B29C66/824; B29C66/8242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US364948A
Cited
US2016627A
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FR889515A
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US2421373A
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US2460460A
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US2559077A
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US2629808A
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US2714416A
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US2782818A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |