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US2648006A Expired / Lapsed US ⏱️ 0.0 years remaining

Frequency generator

Assignee: Westinghouse Electric Corp
•
Filing: 1949-11-14
•
Granted: 1953-08-04
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Expires: 1969-11-14
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Abstract

No abstract record available.

Inventors

  • 👤 Forrest S Mabry

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:38
CPC Classifications
H; H03; H03B; H03B21/00; H03B21/01; H03B21/04

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1919803A Cited
US2131558A Cited
US2354800A Cited
US2501154A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1956-08-03 1957-02-02 1957-08-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1960-08-03 1961-02-02 1961-08-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1964-08-03 1965-02-02 1965-08-04 $7700.00 Window Closed / Lapsed

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