| 29 / | HD | METAL WORKING |
| 592 | DF | METHOD OF MECHANICAL MANUFACTURE {54} |
| 898 | DF | .~ Process for making bearing or component thereof {13} |
| 898.04 | DF | .~.~ Rotary bearing {3} |
| 898.042 | DF | .~.~.~ Plain bearing {2} |
| 898.054 | DF | .~.~.~.~ Sleeve or bushing making {3} |
| 898.059 | ![]() | .~.~.~.~.~ Having liner |