About 1 Trademarks found that are owned by Datel Research Company
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DTR
DA-TEL RESEARCH COMPANY
72382241
28 Jan 1971
Dead/Expired
on 13 Jan 1994
TRANSMITTING MODULES FOR CONVERTING VARIABLE VOLTAGE TO MODULATED AUDI...
Class 021
Class 021
Houseware and Glass Products
TRANSMITTING MODULES FOR CONVERTING VARIABLE VOLTAGE TO MODULATED AUDIO SIGNALS FOR TRANSMISSION OVER TELEPHONE LINES AND RECEIVING MODULES FOR CONVERTING AUDIO SIGNALS BACK TO VARIABLE VOLTAGE OR TO CODED PULSES
Dead/Expired
on 13 Jan 1994
DTR
DA-TEL RESEARCH COMPANY
72382241 · 28 Jan 1971
021
Class 021
Houseware and Glass Products
TRANSMITTING MODULES FOR CONVERTING VARIABLE VOLTAGE TO MODULATED AUDIO SIGNALS FOR TRANSMISSION OVER TELEPHONE LINES AND RECEIVING MODULES FOR CONVERTING AUDIO SIGNALS BACK TO VARIABLE VOLTAGE OR TO CODED PULSES
TRANSMITTING MODULES FOR CONVERTING VARIABLE VOLTAGE TO MODULATED AUDI...