Inventor
William L. Sondermann
Inventor
Circle Pines, MN, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis29%
H05KPrinted circuits29%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
A61NElectrotherapy14%
PatentTitleYear
5,418,686'Electrical safety system for electrical device'19955,411,534'Electrical safety system for electrical device'19955,334,223'Electrical safety system for electrical device'19944,917,093'Biological tissue stimulator with adjustable high voltage power supply dependent upon load impedance'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1995Patents assigned to MINNESOTA MINING & MFG (3)· patent assignee history
1990Based in Minneapolis, MN, US· patent location history
1994–1995Based in Circle Pines, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 3 | 1990–1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Circle Pines, Minnesota, US | 3 | 1994–1995 |
| Minneapolis, Minnesota, US | 1 | 1990 |