Uncategorized
Inventor
Automatic call recording system
Coordinate switching system
Multicustomer private branch exchange
Telephone ringing circuit
Trouble recorder control circuits
No associations
LandOfFree
Oscar H. Williford does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Oscar H. Williford, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oscar H. Williford will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-239537