Music
Instruments
Inventor
active
Sound generating system for a keyboard
Speaker volume control apparatus and method
No associations
LandOfFree
John J. Rohulich does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with John J. Rohulich, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and John J. Rohulich will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1817230