Inventor
Tammy J. Engfer
Inventor
Houlton, WI, US
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B24Bprimary
B24BMachines, devices, or processes for grinding or polishing50%
B24DTools for grinding, buffing or sharpening50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2021Patents assigned to 3M INNOVATIVE PROPERTIES CO (2)· patent assignee history
2021Based in Houlton, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| 3M INNOVATIVE PROPERTIES CO | 2 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houlton, WI, US | 2 | 2021 |