US2509439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heat sealing
Assignee: Individual
•
Filing: 1945-06-11
•
Granted: 1950-05-30
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Langer Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:20
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/46; H05B6/48; H05B6/50; B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C66/00; B29C66/01; B29C66/03; B29C66/034; B29C66/0342; B29C66/349; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81261; B29C66/818; B29C66/8181; B29C66/81811; B29C66/8187; B29C66/81871; B29C66/82; B29C66/824; B29C66/8244; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/71; B29C66/90; B29C66/91; B29C66/919; B29K; B29K2995/00; B29K2995/0003; B29K2995/0008; B29L; B29L2009/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE437665C
Cited
US2248248A
Cited
US2309280A
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US2289618A
Cited
US2330055A
Cited
US2460460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |