|
US1474025A
|
|
Tool for power-operated riveting devices or hammers
|
|
US1497167A
|
|
Covering for constructing aircraft
|
|
US1514040A
|
|
Apparatus for the conversion of hydrocarbon oil
|
|
US1427793A
|
|
Liquid-level-controlling device for boilers or stills
|
|
US1414400A
|
|
Process for the conversion of hydrocarbon oils
|
|
US1367807A
|
|
Process for the conversion of hydrocarbon oils
|
|
US1346797A
|
|
Apparatus for the conversion of hydrocarbon oils
|
|
US1376263A
|
|
Muffler for exhaust-pipes
|
|
US1365777A
|
|
Boiler or still
|
|
US1337831A
|
|
Apparatus for distillation
|
|
US1352254A
|
|
Closure for boiler-headers
|
|
US1484014A
|
|
Process for conversion of hydrocarbon oils and similar substances
|
|
US1440868A
|
|
Sterilizing apparatus
|
|
CA70237A
|
|
Continuous drying apparatus
|
