If i'm not mistaken, right about the time the exclamation point monogram was adopted.Things then settled down between Altec and James B. Lansing Sound until the mid 1950s, when the new company had grown to become a major competitor. Altec again expressed displeasure over use of the "Lansing" name by the newer company, which settled the matter by agreeing to most prominently use the term "JBL" while still retaining their full company name.
The cover of the 1956 catalog features some interesting text "JBL means James B. Lansing Sound, inc.".
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