Teltron fine beam cathode ray deflection tube
1997
1997
1950
1946-08-19
1942
1888
1920-1930
1997
1946-08
1942; 1501-1600
1942
1540-1580
1560-1660
1956-08
1942
1940-1942
1970-1973
1997
1920-1930
1942
1942
1920
1942
1958
1933