W.D. Clark Bi-Plane Patent

For Xmas I received a Patent application blueprint 3 view for a 9 cylinder radial single engined bi-plane.

The patent application is in the name of W.D. Clark, is dated August 20, 1926 & appears to be Patent # 1,723,678.

I am curious as to whether the aircraft actually was built & flown, & if so, what it was named?

I have had an initial look in the Internet, there is material about the Patent, but so far I haven't found anything on a built aircraft.

Thanks

T45