Ralph William Graeme JOHNS

City:

Edmonton

Country:

Canada

Published Applications:

Last publication date:

2016-03-24

Top Assignees for applications by Ralph William Graeme JOHNS

The entities that hold a legal rights for patent applications filed by inventor JOHNS Ralph William Graeme:

Dreco Energy Services ULC 3 Alberta, Canada
DRECO ENERGY SERVICES ULC 2 Edmonton, Canada
DRECO ENERGY SERVICES LTD. 1 Edmonton, Canada

Recent patent applications by JOHNS Ralph William Graeme

Ralph William Graeme JOHNS from Edmonton, CA has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2016-03-24

US20160084004A1

Fixed constructions

Method and apparatus for controlling downhole rotational rate of a drilling tool

#2 | 2015-08-27

US20150240580A1

Fixed constructions

Method and apparatus for controlling downhole rotational rate of a drilling tool

#3 | 2011-02-17

US20110036631A1

Fixed constructions

Method and apparatus for controlling downhole rotational rate of a drilling tool

InventorID:

1270168 ⎘