In 1901 Mr. Conn was issued a patent for his invention from the United States Patent & Trademark Office (USPTO). There were 4 documents on file for this patent. The drawing specification sheet of the patent has been reproduced from original USPTO documents and printed onto parchment paper. This print is sized and ready to install into an 8" x 10" frame. The additional sheets included are printed on 5.50" x 8.50" parchment paper. These accompanying documents describe the scope of this invention in formal terms. The following is an actual excerpt from the patent…

       " Be it known that we, CHARLES G. CONN, and WILLIAM V. PEZZONI, citizens of the United States, residing at Elkhart, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Portable Organs, of which the following is a specification. The subject of our invention is an organ in which the entire action, bellows, and pedal mechanism of effective size and construction may be folded and enclosed within a case of small dimensions when not in use, so that it may be conveniently carried by hand. To this end we construct the entire action or keyboard and its accessories in two independent parts, each with its own bellows mechanism, hinged together in a supporting case in such manner that the two parts of the keyboard may be folded down in vertical position within the open sides of the case, which are then closed by doors."…