Optical inspection apparatus Patent
Optical apparatus for visual detection of roundness and regularity of cone surfaces
Groth, W. G.↗
Engineering topics
Groth, W. G.
Publications and source records attributed to Groth, W. G..
The relation of filler wire hydrogen to aluminum-weld porosity.
Relation of filler metal hydrogen to aluminum weld porosity is determined to ensure launch- vehicle integrity and reliability
HYDROGEN ATOM↗