Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
CLASS NOTES | ||
1.05 | DF | AUTOMATIC CONTROL; SIGNALING OR INDICATING {4} |
2 | DF | TUNNEL RECOVERY OF FLUID MATERIAL |
3 | DF | IN SITU CONVERSION OF SOLID TO FLUID {3} |
7 | DF | WITH SEPARATION OF MATERIALS {2} |
10 | DF | PROCESSES {7} |
19 | DF | MINE LAYOUTS |
20 | DF | EXPANSIBLE BREAKING-DOWN DEVICES {2} |
24 | DF | ICE-WORKING DEVICES {1} |
29 | DF | HARD MATERIAL DISINTEGRATING MACHINES {17} |
79.1 | DF | CUTTER TOOTH OR TOOTH HEAD {17} |
95 | DF | MISCELLANEOUS |