Inventor

SLEEGERS FRANCISCUS T

NL2 patents

Patents

2 patents

US5216664AJun 1, 1993

Optically readable disc with a centering member fixed to a transparent substrate

PHILIPS CORP6 citations58

US4899329AFeb 6, 1990

Optically readable disc with a centering member fixed to a transparent substrate

PHILIPS CORP1 citations47