US2437057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing method
Assignee: Individual
•
Filing: 1942-05-11
•
Granted: 1948-03-02
•
Expires: 1962-05-11
Abstract
No abstract record available.
Inventors
- 👤 Harry F Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:06
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C65/00; B29C65/02; B29C65/18; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/32; B29C66/324; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81413; B29C66/81421; B29C66/81422; B29C66/81427; B29C66/81431; B29C66/8145; B29C66/81457; B29C66/83; B29C66/832; B29C66/8322; B65; B65B; B65B51/00; B65B51/10; B65B51/14; B65B51/146; B29C66/432; B29C66/812; B29C66/8122; B29C66/81423; B29K; B29K2711/00; B29K2711/12; B29K2711/123; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044
Claims Analysis
Total Claims: 0
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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) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |