Patent Assignment
Reel/Frame 022802/0879
Assignment of Assignor's Interest
Recorded: 2009-06-09
Pages: 3
Assignor
POLSTON, HENRY B
Executed: 2009-06-03
Assignee
DEWATERING TECHNOLOGIES, INC.
19907 JANUARY DRIVE, HOUSTON, TEXAS, 77341
Covered Property
(1)
Submersible Pump Water Jetter
Patent:
9,695,839 →
Application:
12/478,547 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 29, 2016
From: DEWATERING TECHNOLOGIES, INC.
To: POLSTON APPLIED TECHNOLOGIES, LLC
Reel/Frame 037619/0575 →
Merger
May 30, 2017
From: POLSTON APPLIED TECHNOLOGIES; U.S. SUBMERGENT CLEANERS, LLC
To: U.S. SUBMERGENT TECHNOLOGIES, LLC
Reel/Frame 042628/0837 →
Security Interest
Sep 17, 2019
From: U.S. SUBMERGENT TECHNOLOGIES, LLC
To: THE WESTMORELAND COMPANY, INC.
Reel/Frame 050404/0890 →