1973, Disclosure of Invention (Casting Procedure for Integram Screens), (folded sheet of graph paper with diagram and attached notes).

Roger Lannes de Montebello’s Disclosure of Invention, folded sheet graph paper with handwritten notes stapled to the inside, January 17, 1973. Includes hand-drawn diagram and notes related to the casting procedure to obtain integral screens, along with four pages of a handwritten description of de Montebello’s technology.

Graphite and pen on Graph Paper. 8.5″ x 11″

Front of packet

Inside page of packet, with diagrams on casting procedure

first page of de Montebello’s disclosure of invention, handwritten and stapled in to the packet