Electrical and scientific apparatus Trademarks Filed in January 10, 1947
BIO-PLASTIC
Filed: January 10, 1947
TRANSPARENT PLASTIC MOUNTS WITH BIOLOGICAL AND GEOLOGICAL SPECIMENS EMBEDDED THEREIN
Owned by: WARD'S NATURAL SCIENCE ESTABLISHMENT, INC.
Serial Number: 71515592
W
Filed: January 10, 1947
AUDIO-FREQUENCY AMPLIFIERS COMPRISING ASSEMBLED UNITS FOR AMPLIFYING ELECTRIC SIGNALS, AUDIO-FREQUENCY TRANSFORMERS, CHOKE…
Owned by: WEBSTER ELECTRIC COMPANY
Serial Number: 71515594
