Unfortunately, I have bad news for you. The manufacturer of your
cement mixer does not exist anymore.
Through the database of the U.S. Patent and Trademark Office, I found
out that "Cherokee" was a registered trademark (registration No.
775736) of the Cherokee Equipment Company Corporation, located in
Sioux City. The trademark related to "mixing attachments for tractors
for industrial and agricultural use", so it is clearly the correct
The trademark was registered on 25 August 1964. But on 25 November
1984, the Trademark Office decided that the "registration was not
renewed and is considered to be expired". The trademark is now listed
as being "dead".
I then searched the coporation database of the Iowa Secretary of
State, sice it is possible (though highly unlikely) that Cherokee
Equipment let the trademark expire, but does still exist. However, no
company of that name is listed anywhere in the Iowa companies
register. Obviously, the company ceased to exist without a legal
successor, since no one claimed the trademark or the company's name.
Since Web research did not bring up any references to the company or
their products, it is very likely that Cherokee Equipment indeed
ceased to exist prior to November 1984, long before the online age.
I'm very sorry because I don't have more pleasant news for you, but I
hope that this answers your question.
Iowa Secretary of State: Corporation Register
United States Patent and Trademark Office: Trademark Database