David H. Graef

City:

Spring Grove, Illinois

Country:

United States

Published Applications:

Last publication date:

2023-04-20

Top Assignees for applications by David H. Graef

The entities that hold a legal rights for patent applications filed by inventor Graef David H.:

SPM Oil & Gas Inc. 1 Fort Worth, TX United States

Recent patent applications by Graef David H.

David H. Graef from Spring Grove, US has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2023-04-20

US20230119815A1

Mechanical engineering

Plug valve assembly

InventorID:

5715871 ⎘