Uncategorized
Inventor
Apparatus for sound reproduction
Automatic loop control mechanism
Photographic film for sounds and picture purposes
Sound printer
Variable density sound recording system
No associations
LandOfFree
Otto Sandvik does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Otto Sandvik, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Otto Sandvik will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-154861