The USAF (mainly) pursued a number of prototype or conceptual vertical takeoff air interceptors at the start of the cold war, designed to position on the North American periphery to counter Soviet LRA prior to the advent of precision long range surface-to-air. Not sure if this exact model was part of that effort or not.
Nope,
@Griz882 was right. It was submitted by Convair as part of AAFSS that the AH-64 won. The coleocopter concept was one branch of early VTOL research that was led by the Germans due to wartime requirements for a VTOL interceptor to counter allied bombing raids. The Germans looked into a whole spectrum of ideas some of which crossed the border into fanciful and unachievable with the technology at the time. During the early cold war there was exploration of many parts of the VTOL spectrum that included helicopters, one flying coleocopter, tiltrotors, ducted jets, tail sitters, etc. Of the various points on the spectrum the only ones that have worked well enough to be fielded are helos, tilt, and ducted jets (kestrel, harrier, f-35).
Tail sitters (Pogo, Vertijet, XFV) never made it past initial testing due to difficulty in landing them and limited performance against conventional aircraft once up and away.