Patent US3562053A successfully refreshed from Google Patents.
US3562053A
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Apparatus and method for heat sealing heat shrinkable film
Assignee: Poly-Version Inc
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Filing: 1967-06-19
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Granted: 1971-02-09
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Expires: 1987-06-19
Abstract
Abstract AN APPARATUS FOR HEAT SEALING SHRINKABLE THERMO-PLASTIC FILMS A SPECIALLY SHAPED KNIFE IS USED WHICH MAINTAINS THERMAL CONTACT DURING A SEVERING OPERATION.
Inventors
- 👤 Donald C Lindley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:25
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/14; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/74; B29C65/743; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/137; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/73; B29C66/737; B29C66/7371; B29C66/73715; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81425; B29C66/83; B29C66/832; B29C66/8322; B29C66/431; B29C66/4312; B29C66/71; B29C66/73711; B29K; B29K2023/00; B29K2995/00; B29K2995/0037; B29K2995/005; B29K2995/0053; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |