Michael Derby

City:

Houston, Texas

Country:

United States

Published Applications:

Last publication date:

2011-08-04

Top Assignees for applications by Michael Derby

The entities that hold a legal rights for patent applications filed by inventor Derby Michael:

Michael Derby from Houston, US has applied for patents for these inventions. The list has both pending applications and granted patents:

Downhole tool having setting valve for packing element

InventorID:

3424747 ⎘