title: Attachment for Lifting-Jacks creator: Porter, Horton B. contributor: Jennings, C. B. contributor: Porter, Thomas K. contributor: Kirkpatrick, Van contributor: Pierce, J. R. contributor: Hopkins, O. B. contributor: Norris Peters Co. publisher: United States. Patent Office. date: 1911-03-28 language: English description: Patent for an attachment for lifting jacks. subject: Patents -- Texas. subject: Science and Technology subject: jacks subject: lifters coverage: United States - Texas - Hill County - Hillsboro rights: Public Domain type: Patent format: [1], 2 p. : ill. ; 23 cm. format: Text identifier: pat-no: 988208 identifier: govno: 02/537062 identifier: https://texashistory.unt.edu/ark:/67531/metapth510617/ identifier: ark: ark:/67531/metapth510617