I need to check an advertised product’s US patent number. I went on the US patent office site and checked the number but it gave me the result of a totally different product, processed in 1988. I was surprised to see this product advertising a recent successful application, but after reading some posts here about the US patent office, it may have happened.
Is it possible for two products to have the same patent number in the US? Or could the number be something else being “used” as a patent number?