POTOMAC ENGINEERING CORPORATION Trademarks
FASTEN-AIDS
Filed: April 18, 1966
CHILDREN'S SMOCKS
Owned by: POTOMAC ENGINEERING CORPORATION
Serial Number: 72243709
LOCK & LEARN
Filed: July 22, 1966
EDUCATIONAL DEVICES OR TOYS TO TRAIN CHILDREN IN THE MANIPULATION OF VARIOUS DOOR FASTENERS
Owned by: POTOMAC ENGINEERING CORPORATION
Serial Number: 72250862