Ed Kazmirski was the inventor of the brakes on the mainwheels
I rather doubt that Cees. First shot from October 1961 MAN. Idea credited to John Roth, Citation designer and member of LIDS (Long Island Drone Society)
Second shot is Doug Spreng's 1960 Nats winning Stormer with main wheel brakes activated from down elevator trim.
Third shot shows them on Tom Brett's late 1961 Nimbus.
Space Control were also selling servo operated drum brakes in 1961, designed by Chuck Boyer.
Ray