Police Officer

Police officers are generally charged with the apprehension of criminals and the prevention and detection of crime, and the maintenance of public order.

Radios

1/1/1928
1933
1936
1940

Megaphone

1934
1954
1961
1969

Camera

1969
1970 - 1992
1980
1990

GPS

1964
2009

Telegraph

1924

Polygraph

1924

computers

1960
1966
1990

Dispatch

1895
02/09/1968
02/16/1968

Tape Recorder

1887
1947
1948

Media

1950