Typewriting machines
Means auxiliary to typewriting function
Means for muffling typewriter noise
Inventor
active
No associations
LandOfFree
Francis Berthelot does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Francis Berthelot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Francis Berthelot will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1668728