Plaque It!
Sponsored by: Flash of Genius |
| 2027763 | Process of making hard sintered metals | |||
| 2076952 | Production of hard metal alloys | |||
| 2096924 | Composite structural product and method of making the same | |||
| 2124538 | Method of making a boron carbide composition | |||
| 2239800 | Production of sintered articles | |||
| 2254975 | Material for pen tips | |||
| 2279003 | Hard facing material and method of making the same | |||
| 2300400 | Heat corrosion resistant metallic material | |||
| 2332071 | Manufacture of hard rollers | |||
| 2422439 | Method of manufacturing composite structural materials | |||
| 2439570 | Electric contact | |||
| 2504906 | Composite metal electric contact member | |||
| 2525831 | Coated valve and parts thereof |