I don’t think so, Don. I think your eyes are fooled by the oxidation. There are a couple identical examples in different condition with exactly the same forged-in Patent notice on WorthPoint, etc.
example
I casually searched DATAMP for Ken-Tool as a “company,” with no luck, then tried finding a matching patent by “pliers” category, also with no luck, despite finding three or four other battery terminal tool designs within a few years of 1926. My guess is the application was Aug1926, but the patent was not granted.
I actually didn’t find ANY patents associated with Ken-Tool on DATAMP, including 5343921 granted 1994 to John H Kusner - wierd.