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US2307316A Expired / Lapsed US ⏱️ 0.0 years remaining

Frequency meter

Assignee: RCA Corp
•
Filing: 1941-02-13
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Granted: 1943-01-05
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Expires: 1961-02-13
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Abstract

No abstract record available.

Inventors

  • 👤 Wolff Irving

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:52
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02; G01R23/06; G01R23/09

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) 1946-01-04 1946-07-06 1947-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1950-01-04 1950-07-06 1951-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1954-01-04 1954-07-06 1955-01-05 $7700.00 Window Closed / Lapsed

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