MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K)
| Subclass | Title |
|---|---|
| 1/00 | Making machine elements |
| 1/02 | Making machine elements balls, rolls, or rollers, e.g. for bearings |
| 1/04 | Making machine elements ball-races |
| 1/05 | Making machine elements cages for bearings |
| 1/06 | Making machine elements axles or shafts |
| 1/08 | Making machine elements axles or shafts crankshafts |
| 1/10 | Making machine elements axles or shafts of cylindrical form |
| 1/12 | Making machine elements axles or shafts of specially-shaped cross-section |
| 1/14 | Making machine elements fittings |
| 1/16 | Making machine elements fittings parts of pipe or hose couplings |
| 1/18 | Making machine elements pistons or plungers |
| 1/20 | Making machine elements valve parts |
| 1/22 | Making machine elements valve parts poppet valves, e.g. for internal-combustion engines |
| 1/24 | Making machine elements valve parts valve bodies; valve seats |
| 1/26 | Making machine elements housings or supporting parts, e.g. axle housings, engine mountings |
| 1/28 | Making machine elements wheels; discs |
| 1/30 | Making machine elements wheels; discs with gear-teeth |
| 1/32 | Making machine elements wheels; discs discs, e.g. disc wheels |
| 1/34 | Making machine elements wheels; discs wheels with spokes |
| 1/36 | Making machine elements wheels; discs with blades |
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