Amplifex Radio Corporation
1920 - 1928
1920 - 1928
1859 - 1929
1921 - 2004
1880 - 1961
1878 - 1965
1894 - 1989
1899 - 1910
1916 - 1918
1876 - 1975
1905 - 1971
1859 - 1968
1892 - 1965
1899 - 1931
1883 - 1959
1878 - 1966
1902 - 1972
1916 - 2004
1867 - 1938
1871 - 1938
1865 - 1933
1860 - 1948
1893 - 1950
1922 - 1993
1917 - 2000
1896 - 1993
1898 - 1994
1871 - 1948
1873 - 1903
1919 - 1972
1876 - 1958
1908 - 1994
1887 - 1942
1895 - 1970
1866 - 1959
1900 - 1972
1905 - 1993
1862 - 1928
1867 - 1944
1863 - 1939
1907 - 1998
1913 - 1986
1883 - 1966
1895 - 1949
1885 - 1939
1889 - 1926
1906 - 1970
1809 - 1923
1900 - 1951
1885 - 1965
1896 - 1962