Inventor
David R. Ellingson
Inventor
Tomah, WI, US
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Hprimary
H02HEmergency protective circuit arrangements50%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987Patents assigned to BEST POWER TECH INC (1)· patent assignee history
1987Patents assigned to PENSAR CORP (1)· patent assignee history
1987Based in Tomah, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BEST POWER TECH INC | 1 | 1987 |
| PENSAR CORP | 1 | 1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tomah, WI, US | 1 | 1987 |