February 25, 1942 Trademark Filings

PERMAS
Analytical Balance Weights
Cancelled  ·  February 25, 1942  ·  71451202  · 
permas
FILTRATOR
Vacuum Filtration Device for Separating Solids from Liquids in Laboratory Procedures
Cancelled  ·  February 25, 1942  ·  71451201  ·