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  • In U.S. Circuit Court of Appeals for 4th Circuit, No. 2771, Thomas E. Robertson, Commissioner of Patents, appellant, v. General Electric Company and Ernst Stoffregen, appellees; appeal from District Court of U.S. for District of Maryland; brief for Commissioner of Patents [microform]

    • Text
    • Washington, D.C. : [s.n.], 1928.
    • 1928

  • In Court of Appeals of D.C., Jan. term, 1925, patent appeal No. 1750, in matter of application of Ernst Stoffregen, improvement in electric arc welding; brief for Commissioner of Patents [microform]

    • Text
    • Washington, D.C. : [s.n.], 1925.
    • 1925

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