Patent US2667437A successfully refreshed from Google Patents.
US2667437A
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Method of sealing polyethylene films
Assignee: JBS USA LLC
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Filing: 1949-10-11
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Granted: 1954-01-26
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Expires: 1969-10-11
Abstract
No abstract record available.
Inventors
- 👤 Charles M Zoubek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81422; B29C65/00; B29C65/02; B29C65/04; B29C65/18; B29C65/24; B29C65/30; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/73; B29C66/731; B29C66/7314; B29C66/73143; B29C66/737; B29C66/7373; B29C66/739; B29C66/7392; B29C66/73921; B29C66/812; B29C66/8126; B29C66/81261; B29C66/81262; B29C66/81263; B29C66/816; B29C66/8167; B29C66/818; B29C66/8181; B29C66/81811; B29C66/8182; B29C66/81821; B29C66/83; B29C66/832; B29C66/8322; B29C66/71; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2995/00; B29K2995/0003; B29K2995/0006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB555054A
Cited
US2407833A
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US2406714A
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US2404191A
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US2478857A
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US2474977A
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US2570921A
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US2477214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |