US2427094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Super-high-frequency wattmeter
Assignee: RCA Corp
•
Filing: 1943-08-31
•
Granted: 1947-09-09
•
Expires: 1963-08-31
Abstract
No abstract record available.
Inventors
- 👤 Evans John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:55
CPC Classifications
G; G01; G01R; G01R21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1039925A
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US947092A
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US1859469A
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US1957454A
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US2088749A
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US2219653A
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US2212211A
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US2282480A
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US2262134A
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US2284379A
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US2398606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |