Patent US3524783A successfully refreshed from Google Patents.
US3524783A
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Method and apparatus for heat-sealing and cutting thermoplastic films
Assignee: ES&A Robinson Canada Ltd
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Filing: 1968-04-16
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Granted: 1970-08-18
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Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 Donald Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:52
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/004; B29C66/0042; B29C66/0044; B29C66/00441; B26; B26F; B26F3/00; B26F3/06; B29C65/00; B29C65/02; B29C65/18; B29C65/74; B29C65/743; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/70; B29C66/72; B29C66/723; B29C66/7234; B29C66/72341; B29C66/72343; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B31; B31B; B31B70/00; B31B70/14; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/137; B29C66/71; B29C66/82; B29C66/822; B29C66/8225; B29K; B29K2101/00; B29K2101/12; B31B70/60; B31B70/64; B31B70/642; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3257256A
Cited
US3384528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |