OIL HEAT INSTITUTE OF WASHINGTON Trademarks
DIAMOND KEY
Filed: October 23, 1964
SERVICES RELATING TO THE PROMOTION OF THE SALE AND USE OF HEATING OIL FOR HEATING RESIDENCES
Owned by: OIL HEAT INSTITUTE OF WASHINGTON
Serial Number: 72204699
OIL HEATS BEST
Filed: December 20, 1965
INDICATING MEMBERSHIP
Owned by: OIL HEAT INSTITUTE OF WASHINGTON
Serial Number: 72236538