
‘Trans-Pac’ GPS receiver, 1990-1991
1990-1991
1990-1991
1996
2017
1993
1990
unknown
1950s
1950s
1970-1971
2012
2020
1979-1980
1991
1930
1931
1968-1972
1970-1975
1970-1979
1871-1900
1989
1989
1982
1983
1950-1955
1948
circa 1980s
1962
c.2020
1978-1979
1970-1976
1950s
circa 1960
circa 1947
1962
1960
mid-20th century
1960s
1981
1982
1917
1970-1979
1880-1920
1959-1962
1931
2016
1958-1965
1931