Uncategorized
Inventor
Energy retrieval system
Gas flow modulator valve
Hot air transfer valve
Total energy conservation system
Total energy conservation system
No associations
LandOfFree
L. Boyen John does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with L. Boyen John, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and L. Boyen John will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-732439