Cleaned up original spare tire

Yeah I didn't think so and was stuck wondering. So, I read up on Michelin's history. It said that that in the 70s Michelin decided to make only radial tires. They opened up two new plants in 1971 in Canada. Then said in 1975, the first American built radial came off the line in South Carolina.

The tire says US Patent and Can. Patent and has a couple of numbers. I looked up the patent and it said it was for a radial tire and was filed in 1968 then published in 1972.