Since we've wandered into Tradename guns

The 1912 Schoverling, Daly & Gales catalogue shows a gun that resembles the Fulton, but is named "Manhatten Arms Co." with the barrels marked "Superior Quality" and "For Nitro Powder".
Courtesy of Researcher

Hunter Arms is also reported to have made a Fulton gun named "Enders Oak Leaf" or "Enders Royal Service" for Shapleigh Hardware Co., St. Louis, although the "Enders" trade name is usually associated with H.&D. Folsom Crescent guns. The E.K. Tryon Co., Philadelphia may have had a Fulton "Keystone" shotgun, along with Folsom guns. Tryon and Great Western Gun Works of Pittsburgh, Pennsylvania both used the "New Haven Fire Arms Co." name, and Fulton guns so marked have been reported. "Delphia Arms Co." was a trade name of Supplee Biddle Hardware Co., also of Philadelphia and a Fulton gun has been identified so marked. The "Hackett Special" was made for Hacketts Hardware in upstate New York and HibSpeBar for Hibbard, Spencer, Bartlett & Co., Chicago. Other trade name guns include "Comstock Arms Co. Duluth", "Miller-Morse Special" for Miller Morse Hardware in Winnipeg, "Sterling", "Hudson Arms", "Royal Arms Co.", "Marks", and "Montgomery Ward & Co."
See
http://www.picturetrail.com/sfx/album/view/17126039 The W.H. DAVENPORT FIREARMS CO. made a tradename boxlock marked "The Fulton" and "Fulton Arms Co., Fulton, N.Y."
The Fall, 1918 Sears, Roebuck and Co. catalog listed the Gladiator Field (Fulton), Gladiator Tournament (Engraved Fulton), Gladiator Diamond (Engraved Fulton), Gladiator Field Hammer (Smith), and Gladiator Ideal Hammer (Smith).