I'm curious about the patent mark on the bottom of '31 running boards especially the Canadian patent date of 1928. How does that date relate in general to all Model A running boards? I don't know how patents allow for continual improvements and design changes to products from the patent date. Apparently it appears only on some '31 boards. Are these boards Canadian only and not authentically correct for USA assembled cars? If I read the RG&JS (at home after the sale) all 3, plain, "Patented in U.S.A", and "Patented in Canada 1928" are correct on US assembled.
I recently sold a set and couldn't provide info to the buyer on the authentic use of these boards as my RG&JS were left at home.
Barb Birt
I recently sold a set and couldn't provide info to the buyer on the authentic use of these boards as my RG&JS were left at home.
Barb Birt
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