Uncategorized
Inventor
Rotary explosive engine
Valve spring lifter
Rotary engine
Rotary explosive engine
Valve spring lifter
LandOfFree
John Fabien Duby does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with John Fabien Duby, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and John Fabien Duby will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-478356