US Patent Class 419
POWDER METALLURGY PROCESSES-- Main Headings
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| CLASS NOTES | ||
| 1 | DF | POWDER METALLURGY PROCESSES WITH HEATING OR SINTERING {16} |
| 61 | DF | FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED METAL PARTICLES {2} |