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J M Fahey
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Oct 2007
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#16
01-03-2023, 04:12 AM
From faint memories, that symbol was used by Philips/ITT/Telefunken etc in the 60s
So itīs "European".
Juan Manuel Fahey
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Helmholtz
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#17
01-03-2023, 01:54 PM
https://commons.wikimedia.org/wiki/C...ols?uselang=de
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