David William Challen

City:

Mansfield

Country:

Australia

Published Applications:

Last publication date:

2010-02-25

Recent patent applications by Challen David William

David William Challen from Mansfield, AU has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2010-02-25

US20100044062A1

Fixed constructions

GRADING APPARATUS FOR GRADING A SURFACE

InventorID:

3759547 ⎘