US2373720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite ceramic and metal structure and method of making the same
Assignee: STUPAKOFF CERAMIC AND Manufacturing CO
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Filing: 1940-08-02
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Granted: 1945-04-17
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Expires: 1960-08-02
Abstract
No abstract record available.
Inventors
- 👤 Semon H Stupakoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:32
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01J5/42; H01J2893/00; H01J2893/0033; H01J2893/0034; Y; Y10; Y10T; Y10T403/00; Y10T403/21; Y10T403/47; Y10T403/477
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) | 1948-04-16 | 1948-10-16 | 1949-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-16 | 1952-10-16 | 1953-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-16 | 1956-10-16 | 1957-04-17 | $7700.00 | Window Closed / Lapsed |