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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`KERR MACHINE CO.
`Petitioner,
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`v.
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`SPM OIL & GAS, INC.
`Patent Owner.
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`Patent No. 9,879,659
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`PATENT OWNER’S POWER OF ATTORNEY
`PURSUANT TO 37 C.F.R. § 42.10(b)
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`Kerr Machine Co. hereby appoints the following practitioners as its attorneys
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`to prosecute and to transact all business in the Patent Trial and Appeals Board of the
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`United States Patent Trademark Office in connection with Kerr’s Petition for Inter
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`Partes Review of U.S. Patent No 9,879,659:
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`Lead Counsel
`James H. Hall (Reg. No. 66,317)
`CABELLO HALL ZINDA, PLLC
`801 Travis, Suite 1610
`Houston, TX 77002
`Telephone: (832) 631-9990
`Fax: (832) 631-9991
`Email: james@chzfirm.com
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`Back-Up Counsel
`J. David Cabello (Reg. No. 34,455)
`CABELLO HALL ZINDA, PLLC
`801 Travis, Suite 1610
`Houston, TX 77002
`Telephone: (832) 631-9990
`Fax: (832) 631-9991
`Email: david@chzfirm.com
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`Stephen D. Zinda (Reg. No. 67,272)
`CABELLO HALL ZINDA, PLLC
`801 Travis, Suite 1610
`Houston, TX 77002
`Telephone: (832) 631-9990
`Fax: (832) 631-9991
`Email: stephen@chzfirm.com
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`[SIGNATURE PAGE FOLLOWS]
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`The undersigned is authorized to sign the Power of Attorney on behalf of the
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`Petitioner Kerr Machine Co.
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`col — Date:April{|,2022
`Signature
`Date Faske
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`Print Name
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`Cao
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`Title
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`CERTIFICATE OF SERVICE
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`Pursuant to 37 C.F.R. §§ 42.6(e)(4), the undersigned certifies that on April 15,
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`2022, the foregoing document was served via Federal Express at the below address
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`of record for Patent Owner:
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`FOLEY & LARDNER LLP
`3000 K STREET N.W.
`SUITE 600
`WASHINGTON DC 20007-5109
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`
` /James H. Hall/
`James H. Hall
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