Something tells me Modern Mechanix got scammed on this one. My guess is the two Hungarian guys got some investment funding and then vanished into thin air along with the cash.
Invisibility At Last Within Grasp of Man
by A.L. White
Two Hungarian scientists solve age-old quest with devices worthy of Arabian nights wizards.
SUPPOSE that out onto a stage come eight chorus girls performing an intricate dance. Gradually something seems to happen, the heads, faces, and upper parts of the bodies of the girls seem to be disappearing. In fact, little by little they do become invisible to the audience until at last only eight pairs of legs are seen gracefully skipping about on the stage in perfect rhythm. You rub your eyes and begin to think you’d better see an oculist right away, but while you are worrying about it, back into your vision come the eight girls, wholly there and dancing gaily as though they had not just given you the shock of a lifetime. Or suppose again that a girl is sitting atop a piano, singing. The piano begins to fade from sight; finally the girl is left sitting in midair, nonchalantly swinging her feet and blithely singing, as though her perch was perfectly substantial.