|
US1976336A
|
|
Apparatus for producing oxygen from liquid air
|
|
US1976388A
|
|
Apparatus for producing oxygen from liquid air
|
|
US1825637A
|
|
Pressure regulating valve
|
|
US1940111A
|
|
Blowpipe
|
|
US1857344A
|
|
Blowpipe
|
|
US1853329A
|
|
Means for controlling the supply of oxygen to blowpipes
|
|
US1830459A
|
|
Blowpipe
|
|
US1577171A
|
|
Process of metal cutting, welding, or the like
|
|
US1425856A
|
|
Process of cutting metals with gaseous fuel
|
|
US1424355A
|
|
Blowpipe
|
|
US1479989A
|
|
Machine for cutting and welding with fluid fuel
|
|
US1505339A
|
|
Gaseous fuel
|
|
US1505340A
|
|
Gaseous fuel
|
|
US1404220A
|
|
Gaseous fuel
|
|
US1404232A
|
|
Gaseous fuel
|
|
US1404223A
|
|
Gaseous fuel
|
|
US1404222A
|
|
Gaseous fuel
|
|
US1404228A
|
|
Gaseous fuel
|
|
US1404227A
|
|
Gaseous fuel
|
|
US1404237A
|
|
Gaseous fuel
|
