Patent US2676642A successfully refreshed from Google Patents.
US2676642A
Expired / Lapsed
US
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Means for heat-sealing films
Assignee: Individual
•
Filing: 1953-08-27
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Granted: 1954-04-27
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Expires: 1973-08-27
Abstract
No abstract record available.
Inventors
- 👤 Frank D Bergstein
- 👤 Haas Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:39
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/28; B29C65/10; B29C65/106; B29C66/00; B29C66/01; B29C66/03; B29C66/034; B29C66/0342; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/83; B29C66/834; B29C66/8341; B29C66/83421; B29C66/83423; B29C66/87; B29C66/874; B29C66/8744; B29C66/87443; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/737; B29C66/7377; B29C66/73771; B29C66/73772; B29C66/739; B29C66/7392; B29C66/73921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2542901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |