Environmental control apparatus Trademarks Filed in April 11, 1950
NATIONAL
Filed: April 11, 1950
AUTOMATIC GAS WATER HEATERS
Owned by: CONTINENTAL WATER HEATER CO.
Serial Number: 71595535
NATIONAL
Filed: April 11, 1950
AUTOMATIC ELECTRIC WATER HEATERS
Owned by: NATIONAL STEEL CONSTRUCTION CO.
Serial Number: 71595548
