Environmental control apparatus Trademarks Filed in May 2, 1925
PYROGRAPH
Filed: May 2, 1925
OXYACETYLENE CUTTING APPARATUS
Owned by: AIR REDUCTION COMPANY, INCORPORATED
Serial Number: 71213677
DUOGRAPH
Filed: May 2, 1925
OXYACETYLENE CUTTING APPARATUS
Owned by: AIR REDUCTION COMPANY, INCORPORATED
Serial Number: 71213678
