| Query | User |
|---|---|
| 3 phase 277 480 | entered by user 5115097 |
| 400 hz motor design | entered by user 2602988 |
| 50 pair network protectors | entered by user 819376 |
| 50 pair network protectors | entered by user ditto |
| all computer protection | entered by user 2964124 |
| autotransformer | entered by user 3765248 |
| computer power converter | entered by user 4780152 |
| frequency 60 hz | entered by user 2168868 |
| frequency 60 hz | entered by user ditto |
| kleen line | entered by user 4916885 |
| line conditioner | entered by user 3171686 |
| line conditioners | entered by user 15585406 |
| power converter | entered by user 2165583 |
| power line filter | entered by user 1978885 |
| power line filter | entered by user ditto |
| power line filter | entered by user ditto |
| rotary phase converter | entered by user 2644044 |
| video amplifier | entered by user 5304441 |