Telephonic communications
Reception of calling information at substation in wireline...
Non-assigned telephone number indication
Inventor
active
No associations
LandOfFree
Zhiyu Guo does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Zhiyu Guo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zhiyu Guo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-3350278