Inventor
active
Hands-free answer arrangement on intercom for key telephone syst
On-hook/off-hook status check circuit
No associations
LandOfFree
Ralph L. Cerbone does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Ralph L. Cerbone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ralph L. Cerbone will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1182515