Stephen A. Yeldell

City:

Humble, Texas

Country:

United States

Published Applications:

Last publication date:

2021-03-04

Top Assignees for applications by Stephen A. Yeldell

The entities that hold a legal rights for patent applications filed by inventor Yeldell Stephen A.:

Stephen A. Yeldell from Humble, US has applied for patents for these inventions. The list has both pending applications and granted patents:

Downhole check valve assembly with a locking mechanism

Downhole check valve assembly with a ratchet mechanism

Downhole check valve assembly with a frustoconical mandrel

Downhole Check Valve Assembly with a Swellable Element Mechanism

InventorID:

2891336 ⎘