March 1930 Electrical and scientific apparatus Trademarks by day
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Electrical and scientific apparatus Trademarks filed in March 1930
"SURWEL"
Filed: March 26, 1930
INSTRUMENTS FOR SURVEYING THE COURSES OF BORE HOLES
Owned by: SPERRY SUN WELL SURVEYING COMPANY
Serial Number: 71297940
GLEASON
Filed: March 22, 1930
MACHINES AND APPARATUS FOR TESTING GEARS, FOR APPARATUS FOR TESTING GEAR-CUTTINGTOOLS, [ FOR REAR-AXLE TESTING APPARATUS…
Owned by: GLEASON WORKS, THE
Serial Number: 71297735
