Metallurgical apparatus
Process
Inventor
active
Fluid closure for and method of preventing flow through an openi
Medical injection patch
Method for cooling workpieces in a liquid bath
Oil pressure delay check valve and pressure switch for shutting
Syringe with automatic retracting needle
No associations
LandOfFree
John M. Marshall 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 M. Marshall, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and John M. Marshall will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-168633