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Apparatus for measuring errors of aiming and firing in practice firing against moving targets

US 2,162,707 A · Inventors: ERNST FISCHER FRIEDRICH

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Overview

The published document from the USPTO: abstract, claims, description and drawings. Open it full size

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Read the whole patent

Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents.

Why it's free to use

  • Granted June 20, 1939. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by June 20, 1956.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledNovember 7, 1936
GrantedJune 20, 1939
Term endedJune 20, 1956
Application number—
Classification (CPC)F41G3/26
Length5 pages

Timeline

Timeline From USPTO dates

1937193919411943194519471949195119531955Application filedNov 7, 1936Patent grantedJune 20, 1939Term endedJune 20, 1956

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