[Patents] Collection of Vintage Stage Illusion Patents. 1920s. Group of 15 US Patent Office-issued documents, complete with drawings and detailed descriptions, for a wide variety of stage illusions. Included are patents for the Hanlon Brothers Beheading Block and Ax illusion, Tobin?s Palligenesia (as performed by Houdini), the Amphrite levitation, W.B. Neale?s patent for ?aerial dancing? apparatus, Hanlon?s Dismembering Apparatus, a P.T. Selbit patent for optical illusions with gloves, and others. 4tos, most saddle-stitched with detailed line drawings. A few ragged edges, but generally very good condition.