ELECTRONIC HOME STUDY CONSOLES WITH A POWER SUPPLY, A VACUUM TUBE BOLTMETER, AND AN OSCILLOSCOPE, AN AUDIO FREQUENCY GENERATOR AND A RADIO FREQUENCY GENERATOR
Trademark Events
Nov 4, 1992
Expired Sec. 9
Oct 11, 1977
Registered - Sec. 8 (6-Yr) Accepted & Sec. 15 Ack.