Uncategorized
Inventor
Cathode ray display tube
Vacuum tube character display unit
Cathode ray display tube
Character projection apparatus
Vacuum tube character display unit
LandOfFree
Donald G. Gumpertz does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Donald G. Gumpertz, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Donald G. Gumpertz will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-211056