Patent FR930770A successfully refreshed from Google Patents.
Patent US2423869A successfully refreshed from Google Patents.
US2423869A
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Composite structure and method of making the same
Assignee: RCA Corp
•
Filing: 1940-09-30
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Granted: 1947-07-15
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Expires: 1960-09-30
Abstract
No abstract record available.
Inventors
- 👤 Gregory W Blessing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:34
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/03; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T156/00; Y10T156/10; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/4902; Y10T29/49075; Y10T29/49078; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315936A
Cited
USRE16201E
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US1453726A
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US1835619A
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US2149732A
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US2060035A
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US2129478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |