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US1862119A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic direction finder

Assignee: Westinghouse Electric Corp
•
Filing: 1926-09-02
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Granted: 1932-06-07
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Expires: 1946-09-02
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Abstract

No abstract record available.

Inventors

  • 👤 Donald G Little

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:36
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; G01S3/38; G01S3/42

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) 1935-06-07 1935-12-07 1936-06-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1939-06-07 1939-12-07 1940-06-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1943-06-07 1943-12-07 1944-06-07 $7700.00 Window Closed / Lapsed

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