US2439953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-loss thermosetting resins
Assignee: Westinghouse Electric Corp
•
Filing: 1944-03-21
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Granted: 1948-04-20
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Expires: 1964-03-21
Abstract
No abstract record available.
Inventors
- 👤 Swiss Jack
- 👤 Newton C Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:23
CPC Classifications
C; C08; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F222/00; C08F222/10; C08F222/12; C08F222/16; C08F222/165; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/442; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848; Y10T428/31851; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB367658A
Cited
US2255313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |