Uncategorized
Inventor
Calling device
Coin detection system
Connector switch circuit
Telephone exchange system
Telephone exchange system
No associations
LandOfFree
Henry Hovland does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Henry Hovland, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Henry Hovland will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-85212