Briesen, Steele, & Knauth

American patent solicitors Briesen, Steele, & Knauth – presumably an intermediate stage, appearing in 1889, between Briesen & Steele and Briesen & Knauth; presumably located at 229 Broadway in New York.

Briesen and partners appear on patents under at least four names. For now we just list them, and let's figure out the history at some point.

Patents for which Briesen, Steele, & Knauth or Briesen Knauth was the patent agent

• Patent US-1888-411779 (Inventors: Nicholas H. Borgfeldt, English title: Flying-machine, Patent agent: Briesen, Steele, & Knauth)
• Patent US-1898-606960 (Inventors: John Doyle, English title: Kite, Patent agent: Briesen Knauth)

Patents for which Briesen & Steele or Frank Briesen was the patent agent

• Patent US-1885-381106 (Inventors: Blaise Bontems, English title: Apparatus for aerial navigation, Supplementary to patent: Patent FR-1885-168266, Patent agent: Briesen & Steele)
• Patent CA-1909-126212 (Inventors: Henry Mesinger, English title: Air Ship, Supplementary to patent: Patent US-1909-940701, Patent agent: Frank Briesen)
• Patent US-1909-940701 (Inventors: Henry Mesinger, English title: Air-Ship, Patent agent: Frank Briesen)
• Patent US-1910-971535 (Inventors: Hermann Hartmann • Wilhelm Klehe, English title: Aeroplane, Patent agent: Frank Briesen)