Jules Richard
of Paris.
London branch: 27 New Bond Street
Jules Richard (19 December 1848 - 18 June 1930) was a French photographer, businessman and instrument maker. He invented and produced the Verascope and Glyphoscope stereographic cameras, and also the Taxiphote stereographic viewer. His father Félix Richard was an instrument maker in Paris, and his uncle was the electrical instrument maker Paul-Gustave Froment. Following his father's death in 1876, Jules returned to the family business, and in 1882 went into partnership with his younger brother Max as Richard Frères. They established a reputation for making scientific barometers, anemometers, pyrometers, aneroid barographs, dynamometers, etc. In 1891 they split up, but the business of Jules Richard continued to use the 'RF' monogram.
The above information is condensed for the Wikipedia entry.
Verascope and Glyphoscope.