Permasep Trademarks

PERMASEP
hollow fine-fiber membranes used in reverse osmosis devices for water desalination
Cancelled  ·  November 13, 1990  ·  74114402  · 
PERMASEP
PERMEATING APPARATUS FOR SEPARATING COMPONENTS OF A MIXTURE
Expired  ·  June 22, 1966  ·  72248652  ·