Patent Assignment
Reel/Frame 038262/0043
Change of Name
Recorded: 2016-03-25
Pages: 3
Assignor
BLACK HAWK ACQUISITION, INC.
Executed: 2013-12-19
Assignee
BLACK HAWK ENERGY SERVICES LTD.
13593 56TH STREET NW, WILLISTON, NORTH DAKOTA, 58801
Covered Properties
(2)
Base Beam for Supporting a Self-Propelled Derrick Rig
Application:
13/768,616 →
Publication:
US 2014/0231609
Counterweight Assembly for a Self-Propelled Derrick Rig Assembly
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Dec 17, 2013
From: BLACK HAWK ENERGY SERVICES, INC.
To: BLACK HAWK ACQUISITION, INC.
Reel/Frame 031797/0084 →
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
Jun 4, 2025
From: BLACK HAWK ENERGY SERVICES LTD.
To: BLACK HAWK ENERGY SERVICES, LLC
Reel/Frame 071531/0955 →