| 2731711 | Sintered tungsten carbide composition | |||
| 2456761 | Rugged cathode | |||
| 2455183 | Tool | |||
| 2339392 | Cathode | |||
| 2250561 | Method for applying metal layers | |||
| 2191471 | Welding method | |||
| 2068848 | Method of forming diamondiferous abrasive compositions | |||
| 2048276 | Plated metal having carbide surface | |||
| 2003019 | Method of protectively facing surfaces with abrasion resisting material | |||
| 1998609 | Process of making hard cemented carbide materials | |||
| 1977128 | Hard facing | |||
| 1960879 | Scarifier tooth | |||
| 1939768 | Centrifugally cast product | |||
| 1791968 | Welding method |