Patent US3536568A successfully refreshed from Google Patents.
US3536568A
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US
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Sealing and/or severing device for plastic films
Assignee: WILLCOX AND GIBBS Inc
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Filing: 1968-06-10
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Granted: 1970-10-27
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Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 Milton Rothstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:23
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/32; B29C65/74; B29C65/743; B29C65/7441; B29C66/004; B29C66/0042; B29C66/0044; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/20; B29C66/24; B29C66/242; B29C66/2422; B29C66/24221; B29C66/2424; B29C66/24243; B29C66/24244; B29C66/244; B29C66/246; B29C66/345; B29C66/3452; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/54; B29C66/542; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/812; B29C66/8122; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/8145; B29C66/81457; B29C66/83; B29C66/832; B29C66/8322; B29C66/71; B29C66/8126; B29C66/81262; B29C66/81421; B29C66/81422; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2031/00; B29L2031/48; B29L2031/4842; B29L2031/4864; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2721600A
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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) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |