US Patent Class 388
ELECTRICITY: MOTOR CONTROL SYSTEMS-- 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 | ||
| 800 | DF | CLOSED LOOP SPEED CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {4} |
| 825 | DF | OPEN LOOP SPEED CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {3} |
| 842 | DF | CLOSED LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {2} |
| 848 | DF | OPEN LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {2} |
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| CROSS-REFERENCE ART COLLECTIONS | ||
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| 900 | DF | SPECIFIC SYSTEM OPERATIONAL FEATURE {6} |
| 907 | DF | SPECIFIC CONTROL CIRCUIT ELEMENT OR DEVICE {13} |
| 923 | DF | SPECIFIC FEEDBACK CONDITION OR DEVICE {6} |
| 935 | DF | SPECIFIC APPLICATION: {2} |