US2217451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating thermoplastic materials
Assignee: General Electric Co
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Filing: 1938-03-01
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Granted: 1940-10-08
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Expires: 1958-03-01
Abstract
No abstract record available.
Inventors
- 👤 Winton I Patnode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; B29C48/00; B29C48/15; H; H01; H01B; H01B13/00; H01B13/06; H01B13/065; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; B29C48/03; B29C48/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |