Hey Pete,
What's the problem with Ken using the Lefever name? Isn't it "public domain" after 75 years? And since Ithaca is no longer in business who could challenge him? Even if the Ithaca Gun Co. receivers challenged him, all he have to do is change the name slightly, like Lefever Phoenix...or Lefever Gun rather than Lefever Arms...No one owns a blanket trademark covering all trademarks that use the word Lefever somewhere in the name...and anyone who says they do is probably bluffing.