Patent US2451724A successfully refreshed from Google Patents.
US2451724A
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US
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Super high frequency wattmeter
Assignee: RCA Corp
•
Filing: 1945-12-06
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Granted: 1948-10-19
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Expires: 1965-12-06
Abstract
No abstract record available.
Inventors
- 👤 Evans John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:30
CPC Classifications
G; G01; G01R; G01R21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1859469A
Cited
US1957454A
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US2151157A
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US2212211A
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US2387158A
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US2400777A
Cited
US2398606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |