A Funny Story Regarding That!
Yes, I remember ... the "Magic Arm". The reason I remember it so well is that I sponsored a seminar for Dan Inosanto in 1980. At that time, I had my fist springarm, which I had designed in 1978. Sifu Dan saw it, worked with it and really liked it! He asked if I had a patent on it or if I was planning to patent it. I told him no. Not long after that he was in partnership with Hawkins Cheung. They had a school together. Pretty soon after that Hawkins Cheung came out with the "Magic Arm", which was then and still is, inferior to my springarm! Just a bit of history there! :)