Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
Inventor
active
Arc discharge lamp having improved lumen maintenance
Fluorescent lamp having double phosphor layer
Mercury dispenser for discharge lamps
No associations
LandOfFree
Joseph A. Roy does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Joseph A. Roy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Joseph A. Roy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1053039