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box of vacuum tube bridge parts

box of vacuum tube bridge parts

General Radio Company
1950-1960
double plate triode

double plate triode

Westinghouse Electric & Manufacturing Company
after 1922
vacuum tube bridge

vacuum tube bridge

General Radio Company
circa 1959
/ 1

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The Collection of Historical Scientific Instruments
Science Center, Room 371 • 1 Oxford Street
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p. 617-495-2779 • f. 617-496-5794
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