Patent US3681183A successfully refreshed from Google Patents.
US2961031A
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Apparatus for heat sealing and severing thermoplastic films
Assignee: Individual
•
Filing: 1957-10-28
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Granted: 1960-11-22
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Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Fener Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:11
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/222; B29C65/229; B29C65/38; B29C65/74; B29C65/743; B29C65/7433; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/137; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/8145; B29C66/81457; B29C66/818; B29C66/8182; B29C66/81821; B29C66/83; B29C66/832; B29C66/8322; B29C66/70; B29C66/71; B29C66/812; B29C66/8122; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/84; B29C66/849; B29C66/90; B29C66/91; B29C66/94; B29C66/949; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 0
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |