Patent US3454741A successfully refreshed from Google Patents.
US3454741A
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US
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Heat seal machine
Assignee: KWIKSEAL
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Filing: 1966-04-11
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Granted: 1969-07-08
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Expires: 1986-04-11
Abstract
No abstract record available.
Inventors
- 👤 George W Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:17
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/14; A; A41; A41H; A41H43/00; A41H43/04; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/78; B29C65/7858; B29C65/7876; B29C66/00; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/70; B29C66/72; B29C66/729; B29C66/7292; B29C66/90; B29C66/91; B29C66/92; B29C66/922; B29C66/9221; B29C66/924; B29C66/9241; B29C66/94; B29C66/944; B65B2051/105
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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |