A lot is written about this subject already, but I’d like to add that Marmon-Herrington’s core business, since 1931, is the design and production of All-Wheel Drive conversion kits (they built complete vehicles, even tanks, as well).
“All-Wheel Drive” was incorporated in their old logo, and the term was actively marketed by them.
Maybe they had it trademarked or patented? That is what I would have to look into. For now, I leave you with a link to my old M-H website:
http://www.mapleleafup.nl/marmonherrington/
HTH,
Hanno
