Card, picture, or sign exhibiting
Changing exhibitor
Double reel and web
Inventor
active
Digital spring roll display device
Scrolling sign with manually operated change mechanism
Sign mechanism having traversable web
Tamper-proof display and dispensing apparatus
No associations
LandOfFree
Robert C. Clapper does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Robert C. Clapper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Robert C. Clapper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-891155