PREFCO PRODUCTS INC. Trademarks
AIR/LOK
Filed: July 8, 1969
LOUVERS
Owned by: PREFCO PRODUCTS INC.
Serial Number: 72332042
DRAFT LOK
Filed: October 20, 1969
DAMPERS AND SHUTTERS
Owned by: PREFCO PRODUCTS INC.
Serial Number: 72341194
AIR LOK
Filed: October 20, 1969
LOUVERS
Owned by: PREFCO PRODUCTS INC.
Serial Number: 72341196
QUICK FAB
Filed: January 5, 1971
LOUVERED VENTILATORS
Owned by: PREFCO PRODUCTS INC.
Serial Number: 72380219
PIVOT/AIR
Filed: May 25, 1983
Dampers in the Nature of Ventilators
Owned by: PREFCO PRODUCTS INC.
Serial Number: 73427497
