IP Library Assignment 021005/0193
Patent Assignment
Reel/Frame 021005/0193

Security Agreement

Recorded: 2008-05-27 Pages: 5
Assignor
KEYSTONE DRILL SERVICES, LLC
Executed: 2008-05-23
Assignee
THE PRUDENTIAL INSURANCE COMPANY OF AMERICA, AS COLLATERAL AGENT
C/O PRUDENTIAL CAPITAL GROUP, 1170 PEACHTREE STREET, SUITE 500, ATLANTA, GEORGIA, 30309
Covered Properties (2)
Multi-Sectional Percussive Drill Bit Assembly
Patent: 7,389,833 →
Application: 11/422,625 →
Publication: US 2006/0278433
Multi-Sectional Percussive Drill Bit Assembly
Patent: 7,419,017 →
Application: 11/563,350 →
Publication: US 2007/0095576
Related Assignments (6)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Jun 7, 2006
From: WALKER, THOMAS A.; MEANS, STEPHEN R.; SMITH, RICHARD
To: KEYSTONE DRILL SERVICES, INC.
Reel/Frame 017735/0386 →
Assignment of Assignor's Interest Nov 27, 2006
From: WALKER, THOMAS A.; MEANS, STEPHEN R.; SMITH, RICHARD K., JR.
To: KEYSTONE DRILL SERVICES, INC.
Reel/Frame 018553/0382 →
Assignment of Assignor's Interest May 27, 2008
From: KEYSTONE DRILL SERVICES, INC.
To: KEYSTONE DRILL SERVICES, LLC
Reel/Frame 021005/0039 →
Assignment of Assignor's Interest Dec 9, 2008
From: KEYSTONE DRILL SERVICES, INC.
To: KEYSTONE AIR & DRILL SUPPLY CO.
Reel/Frame 021936/0872 →
Assignment of Assignor's Interest Oct 22, 2009
From: KEYSTONE DRILL SERVICES, LLC
To: KEYSTONE AIR & DRILL SUPPLY CO.
Reel/Frame 023401/0963 →
Release of Security Interest Jul 31, 2015
From: THE PRUDENTIAL INSURANCE COMPANY OF AMERICA, AS COLLATERAL AGENT
To: KEYSTONE DRILL SERVICES, LLC
Reel/Frame 036230/0595 →