John C. Helmer

City:

Eugene, Oregon

Country:

United States

Published Applications:

Last publication date:

2010-06-24

Top Assignees for applications by John C. Helmer

The entities that hold a legal rights for patent applications filed by inventor Helmer John C.:

John C. Helmer from Eugene, US has applied for patents for these inventions. The list has both pending applications and granted patents:

Spiral pumping stage and vacuum pump incorporating such pumping stage

Centripetal pumping stage and vacuum pump incorporating such pumping stage

InventorID:

3631017 ⎘