Environmental control apparatus Trademarks Filed in December 26, 1941
DURACLAD
Filed: December 26, 1941
Electric and Gas Water Heaters
Owned by: A. O. SMITH CORPORATION (N.Y. CORP.)
Serial Number: 71449784
PERMAGLAS
Filed: December 26, 1941
((Electric and ))Gas Water Heaters
Owned by: A. O. SMITH CORPORATION
Serial Number: 71449785
