DOUGLAS ENGINEERING COMPANY, INC. Trademarks
DS
Filed: June 12, 1973
ELECTRICAL FEEDTHRUS
Owned by: DOUGLAS ENGINEERING COMPANY, INC.
Serial Number: 72459999
DUCTORSEAL
Filed: June 12, 1973
ELECTRICAL FEEDTHRUS
Owned by: DOUGLAS ENGINEERING COMPANY, INC.
Serial Number: 72460000
