Patent Assignment
Reel/Frame 031797/0084
Assignment of Assignor's Interest
Recorded: 2013-12-17
Pages: 7
Assignor
BLACK HAWK ENERGY SERVICES, INC.
Executed: 2013-12-16
Assignee
BLACK HAWK ACQUISITION, INC.
13593 56TH ST. NW, WILLISTON, NORTH DAKOTA, 58801
Covered Properties
(4)
Base Beam for Supporting a Self-Propelled Derrick Rig
Application:
13/768,616 →
Publication:
US 2014/0231609
Base Beam and Self-Propelled Derrick Rig Assembly
Counterweight Assembly for a Self-Propelled Derrick Rig Assembly
Methods of Supporting a Self-Propelled Derrick Rig
Related Assignments
(4)
Other recorded transfers of the patents in this record — the chain of ownership.
Change of Name
Mar 25, 2016
From: BLACK HAWK ACQUISITION, INC.
To: BLACK HAWK ENERGY SERVICES LTD.
Reel/Frame 038262/0043 →
Security Interest
Dec 4, 2017
From: BLACK HAWK ENERGY SERVICES LTD.; HANDY & HARMAN; HANDYTUBE CORPORATION; MTE CORPORATION
To: PNC BANK, NATIONAL ASSOCIATION
Reel/Frame 044678/0939 →
Change of Name
Dec 28, 2017
From: BLACK HAWK ACQUISITION, INC.
To: BLACK HAWK ENERGY SERVICES LTD.
Reel/Frame 044968/0764 →
Change of Name
Jun 4, 2025
From: BLACK HAWK ENERGY SERVICES LTD.
To: BLACK HAWK ENERGY SERVICES, LLC
Reel/Frame 071531/0955 →