DOUBLEX
Filed: October 21, 1949
AUTOMATIC ELECTRIC WATER HEATERS
Owned by: NATIONAL STEEL CONSTRUCTION CO.
Serial Number: 71586646
NATIONAL
Filed: April 11, 1950
AUTOMATIC ELECTRIC WATER HEATERS
Owned by: NATIONAL STEEL CONSTRUCTION CO.
Serial Number: 71595548
ELEKTRO-FLO
Filed: April 23, 1965
AUTOMATIC ELECTRIC HOT WATER HEATERS AND TANKS WITH HEATERS INCORPORATED ADAPTED FOR CONNECTION WITH EXTERNAL PIPING
Owned by: NATIONAL STEEL CONSTRUCTION CO.
Serial Number: 72217200
GLASTEEL
Filed: May 5, 1967
FLUID STORAGE TANKS AND PRESSURE VESSELS-NAMELY, HYDRO-PNEUMATIC TANKS AND WATER STORAGE TANKS
Owned by: NATIONAL STEEL CONSTRUCTION CO.
Serial Number: 72270730
GLASTEEL
Filed: March 24, 1975
DOMESTIC HOT WATER TANKS AND HEATERS THEREFOR
Owned by: NATIONAL STEEL CONSTRUCTION CO.
Serial Number: 73047505
