Uncategorized
Inventor
Jet flame fired furnaces
Method of and apparatus for annealing sheet metal
Method of and apparatus for welding metal tubes
Recuperator structures
Recuperator structures
LandOfFree
Frank D. Hazen does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Frank D. Hazen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frank D. Hazen will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-P-209916