Microsource Corporation Trademarks
MICROSOURCE
Filed: February 12, 1979
Electronic Tone Ringers for Use with Telephones
Owned by: Microsource Corporation
Serial Number: 73203662
µS
Filed: February 28, 1979
Compact Electronic Switching Power Supplies, Battery Chargers, and Audio Signalling Units-Namely, Audio Indicators and Tone…
Owned by: Microsource Corporation
Serial Number: 73205499
CALL TONE
Filed: November 15, 1979
Electronic Extension Telephone Ringers
Owned by: Microsource Corporation
Serial Number: 73236710
