|
US4872502A
|
|
Air cooling of enclosed gear drives
|
|
DE364113C
|
|
Worm gear for uniform rotation of the workbench of machine tools, in particular of gear milling machines
|
|
US1790221A
|
|
Power plant
|
|
US1435918A
|
|
Elastic-fluid turbine
|
|
US1343963A
|
|
Transmission-gearing
|
|
CA168402A
|
|
Metal recovery method
|
|
US1170342A
|
|
Process for the recovery of metals from waste oils.
|
|
GB191509138A
|
|
Improvements in Toothed Gearing.
|
|
US1172778A
|
|
Angular spacing and feeding mechanism for dividing-engines and machine-tools.
|
|
US1151762A
|
|
Transmission-gearing.
|
|
US786627A
|
|
Railway-frog.
|
|
US757606A
|
|
Means for operating hydrocarbon-burners for metallurgical furnaces.
|
|
US728217A
|
|
Steel casting with hardened portions and process of making same.
|
|
US677801A
|
|
Printing-telegraph.
|
