29 / | HD | METAL WORKING |
592 | DF | METHOD OF MECHANICAL MANUFACTURE {54} |
898 | DF | .~ Process for making bearing or component thereof {13} |
898.04 | .~.~ Rotary bearing {3} | |
898.041 | DF | .~.~.~> Thrust bearing |
898.042 | DF | .~.~.~> Plain bearing {2} |
898.06 | DF | .~.~.~> Anti-friction bearing or component thereof {7} |