Telephonic communications
Multi-line or key substation system with selective switching...
Switching or supervision feature
Inventor
active
No associations
LandOfFree
Hans-Rudolf Fritschi does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Hans-Rudolf Fritschi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hans-Rudolf Fritschi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1669316