US2606987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing element for thermo-plastic film
Assignee: Individual
•
Filing: 1949-06-14
•
Granted: 1952-08-12
•
Expires: 1969-06-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Winstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:23
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/225; B29C65/226; B29C65/228; B29C66/00; B29C66/004; B29C66/0042; B29C66/01; B29C66/03; B29C66/034; B29C66/0342; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/135; B29C66/1352; B29C66/346; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81457; B29C66/818; B29C66/8182; B29C66/81821; B29C66/8187; B29C66/81871; B29C66/812; B29C66/8122; B29C66/8126; B29C66/81261; B29C66/8181; B29C66/81811; B29C66/83; B29C66/832; B29K; B29K2909/00; B29K2909/08; B29L; B29L2031/00; B29L2031/712; B29L2031/7128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |