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US2727345A
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Heat sealing device
Assignee: Package Machinery Co
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Filing: 1952-03-26
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Granted: 1955-12-20
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Expires: 1972-03-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence W Schoppee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:58
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/80; B29C66/83; B29C66/834; B29C66/8351; B29C66/83531; B29C66/83533; B65; B65B; B65B51/00; B65B51/10; B65B51/18; B29C65/24; B29C65/242; B29C65/30; B29C65/305; B29C66/70; B29C66/71; B29C66/81; B29C66/814; B29C66/8145; B29C66/81463; B29C66/81465; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2027/00; B29K2027/06; B29L; B29L2031/00; B29L2031/712; Y; Y10; Y10S; Y10S198/00; Y10S198/952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |