Inventor
Michael R. Spengler
Inventor
Stonington, IL, US
Overview
Patents· 2 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B62Dprimary
B62DMotor vehicles50%
E04BGeneral building constructions50%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017–2020Patents assigned to CATERPILLAR INC (2)· patent assignee history
2017–2020Based in Stonington, IL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CATERPILLAR INC | 2 | 2017–2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Stonington, Illinois, US | 2 | 2017–2020 |