Gumphert, George A & Co.
Philadelphia, PA - This company likely started in the late 1890s as a partnership between George Gumphert and George W. H. Fawkes. At some point in the 19 teens, the name was changed to George Gumphert & Sons.
Job listings for Pattern Maker's begin in 1903, with an address of 238 Cherry St.
G. A. Gumphert Patent #561,663 - Woodworkers' Vise, 6/9/1896, Assigned 1/2 to George W. H. Fawkes
Quick Acting Woodworkers Vise ca. 1893.