![]() Electronic File Wrappers | ![]() Electronic Patent Documents | ![]() Paper Patent Documents | Current as of: June, 1999
| ![]() and Services |
| CLASS NOTES | ||
| 1 | DF | ELECTRICAL HYBRID CALCULATING COMPUTER {2} |
| 100 | DF | ELECTRICAL DIGITAL CALCULATING COMPUTER {10} |
| 800 | DF | ELECTRICAL ANALOG CALCULATING COMPUTER {1} |