Electrical and scientific apparatus Trademarks Filed in September 18, 1950
MARKA-SWEEP
Filed: September 18, 1950
SWITCHING APPARATUS FOR SELECTING ANY ONE OF A NUMBER OF R.F. CHANNELS AS WELL AS GIVING A CORRECT PICTURE AND SOUND CARRIER…
Owned by: KAY ELECTRIC COMPANY
Serial Number: 71603688
SONA-GRAPH
Filed: September 18, 1950
INSTRUMENT WHICH IS A SOUND SPECTROGRAPH WHICH PRODUCES PERMANENT VISUAL RECORDS SHOWING DISTRIBUTION OF ENERGY VS. BOTH…
Owned by: KAY ELECTRIC COMPANY
Serial Number: 71603689
Image Trademark
Filed: September 18, 1950
DRAWING INSTRUMENTS-NAMELY, COMPASSES
Owned by: Vemco Corporation
Serial Number: 71603706
