Casing centralizer
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This application is related to (1) U.S. Design application Ser. No. 29/405,113, filed Oct. 28, 2011; (2) U.S. Design application Ser. No. 29/405,117, filed Oct. 28, 2011; (3) U.S. Design application Ser. No. 29/405,121, filed Oct. 28, 2011; (4) U.S. Design application Ser. No. 29/405,122, filed Oct. 28, 2011; (5) U.S. Design application Ser. No. 29/405,124, filed Oct. 28, 2011; (6) U.S. Design application Ser. No. 29/405,133, filed Oct. 28, 2011, the entire disclosures of which are incorporated herein by reference.
Claims
The ornamental design for a casing centralizer, as shown and described.
Type: Grant
Filed: Oct 28, 2011
Date of Patent: Jan 22, 2013
Assignee: Top-Co Cementing Products Inc. (Weatherford, TX)
Inventors: Gregory Andrigo (Almonte), Alfredo Sanchez (Tomball, TX)
Primary Examiner: Mark Goodwin
Application Number: 29/405,130