They are patents pending, meaning:
"Patent pending is the term used to describe a patent application that has been filed with the patent office, but has not issued as a patent. Patent pending indicates that the inventor is pursuing protection, but the scope of protection, or whether a patent will even issue, is still undetermined."
It essentially means it's in limbo, but the patent does have first claim protection. Usually they grant patents after production reaches certain number of units.
So - you can't find them yet