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EK2 (Philips)
Octode 1953
page 1 2 3
EK2 sheet 1 2 FP
date 1953.10.10 1953.10.10 1999.07.04
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AK2 (Philips)
Octode 1947
page 1 2 3 4
AK2 sheet 1 1 2 FP
date 1947.12.01 1953.12.12 1959.12.12 1999.06.26
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page 1 2 3
AK1 sheet 2 2 FP
date 1947.12.01 1953.12.12 1999.06.26
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