US2418750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal detection system
Assignee: RCA Corp
•
Filing: 1942-09-04
•
Granted: 1947-04-08
•
Expires: 1962-09-04
Abstract
No abstract record available.
Inventors
- 👤 Warren H Bliss
- 👤 Smith J Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/32; H; H03; H03J; H03J7/00; H03J7/18; H03J7/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2214342A
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US2158285A
Cited
US2273914A
Cited
US2213886A
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GB506133A
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US2275016A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-07 | 1950-10-07 | 1951-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-07 | 1954-10-07 | 1955-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-07 | 1958-10-07 | 1959-04-08 | $7700.00 | Window Closed / Lapsed |