Inventor

David Dwight Sandmann

Inventor
Oklahoma City, OK, US

Overview

7→
Patents
2016–2019
Patent span
Performing operations
Primary field (CPC B)

Patents· 7 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B66Fprimary
B66FHoisting, lifting, hauling or pushing, not otherwise provided for, e.g. devices which apply a lifting or pushing force directly to the surface of a load50%
H04BTransmission50%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2016–2019Patents assigned to GRAY MFG CO (7)· patent assignee history
2016–2019Based in Oklahoma City, OK, US· patent location history
2017Based in Oaklahoma, OK, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GRAY MFG CO72016–2019
Locations
LocationPatentsSpan
Oklahoma City, OK, US62016–2019
Oaklahoma, OK, US12017