73018684
Apr 12, 1974
May 13, 1975
TAPE RECORDERS AND ADAPTORS FOR TAPE RECORDERS FOR RECORDING AND PLAYING BACK MAGNETIC SOUND TAPES ON FLAT CARDS; AND FOR MAGNETIC SOUND TAPES FOR RECORDING AND PLAYING BACK SOUND MESSAGES, EITHER ADHESIVE COATED FOR APPLICATION TO FLAT OBJECTS OR SECURED FLAT CARDS
Electrical and Scientific Apparatus