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(Q7276983)
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English
RMA tube designation
American naming system for industrial, transmitting, and special-purpose vacuum tubes
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Statements
instance of
vacuum tube designation system
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inception
1924
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country
United States of America
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end time
1944
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different from
RETMA tube designation
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Identifiers
Freebase ID
/m/03wj7_y
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Wikipedia
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enwiki
RMA tube designation
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