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US2480208A Expired / Lapsed US ⏱️ 0.0 years remaining

Radio distance and direction indicator

Assignee: United States, WAR, Secretary of
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Filing: 1944-06-27
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Granted: 1949-08-30
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Expires: 1964-06-27
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Abstract

No abstract record available.

Inventors

  • 👤 Luis W Alvarez

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 22:51
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1506192A Cited
US2194141A Cited
US2161081A Cited
GB520778A Cited
US2216707A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1952-08-29 1953-02-28 1953-08-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1956-08-29 1957-02-28 1957-08-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1960-08-29 1961-02-28 1961-08-30 $7700.00 Window Closed / Lapsed

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