Uncategorized
Inventor
Uncategorized
Inventor
Electron discharge apparatus
Electron discharge device
Electron discharge tube
No associations
LandOfFree
Douglas Goodchild Frank does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Douglas Goodchild Frank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Douglas Goodchild Frank will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-672691