150 - [PATENTS]

[PATENTS] ARCHIVES of Dimitri RIABOUCHINSKY RIABOUCHINSKY, Dimitri (1882–1962) — Autograph • Extensive correspondence with the French engineering firm Lavoix & Mosès, based in Paris. The technical department of Lavoix & Mosès offered services for filing patents for inventions, as well as for validating patents in other countries. Dimitri Pavlovich Riaboushinsky began using their services as early as 1922; the correspondence presented here illustrates a long-standing collaboration regarding D.P. Riaboushinsky’s inventions, their patenting, and their promotion. Includes: drafts of letters from D. P. Riabouchinsky addressed to the firm Lavoix&Mosès, 1922–1956, in French, 27 pp., various formats; replies from the Lavoix & Mosès engineering firm to D.P. Riabouchinsky, 1922–1956, signed typewritten letters and invoices, in French, 75 pp., various formats. We have included: an excerpt from a brochure describing the activities and services provided by the firm Lavoix & Mosès; a copy of the English-language text for a U.S. patent application, 3 pp., 32 × 21 cm. The correspondence discusses various inventions by D.P. Riabouchinsky and the innovative nature of certain modifications. For its part, the engineering firm strives to determine the extent to which the invention is innovative and functional, and in which fields it may be applicable. The firm also handled the process of obtaining patents in the United States and England, and assisted D.P. Riabouchinsky in correctly completing his application and carrying out the subsequent procedures. Thanks to his collaboration with this firm, as soon as he arrived in France, D.P. Riabouchinsky filed a patent for the invention of a pre-combustion rocket (developed while he was still in Moscow), and then had it validated in England and the United States. Later, he made a series of improvements to the pre-combustion rockets. • Correspondence between D.P. Riabouchinsky and the Ruggieri pyrotechnics company, which had contacted the scientist to conduct a series of tests on his invention and subsequently acquire the patent if the tests went as planned. Typewritten letters from the Ruggieri company, 1926–1927, in French, 11 pp., 27.5 × 22 cm; one typewritten letter, dated July 24, 1951, in French, 1 p., 27.5 × 22 cm; drafts of handwritten letters by D. P. Riabouchinsky, written in response to a request from the Ruggieri Company, 1927, in French, 3 pp., as is. Text of the U.S. patent on the pre-combustion rocket, 2 pp. • Various correspondence with the French Ministry of Commerce and various engineering firms (Emmanuel Bert & G. de Kervenant) regarding patents on D. P. Riabouchinsky’s inventions. 1956–1957. Typewritten letters, in French, 16 pp., various sizes, as is. Drafts and copies of handwritten letters by D. P. Riabouchinsky, 1956–1957, in French, 18 pp., various sizes, as is. [PATENTS ON INVENTIONS] ARCHIVE OF Dmitry Riabushinsky Riabushinsky, Dmitry (1882–1962) - Autograph • Extensive correspondence with the French engineering firm Lavoix&Mosès, based in Paris. The Lavoix & Mosès technical office provides services for patenting inventions, as well as for obtaining patent approval in other countries. Dmitry Pavlovich Ryabushinsky began using their services as early as 1922; the correspondence presented here is an example of a long-term collaboration regarding D.P. Ryabushinsky’s inventions, their patenting, and promotion. Includes: drafts of handwritten letters from D.P. Ryabushinsky to the firm Lavoix & Mosès, 1922–1956, in French, 27 pages, various formats; replies from the Lavoix & Mosès engineering office to D.P. Ryabushinsky, 1922–1956, typewritten letters and invoices, in French, 75 pages, various formats. Enclosed: an excerpt from a brochure describing the activities and services provided by Lavoix & Mosès; a copy of the text in English for filing an American patent application, 3 pages, 32 × 21 cm. The correspondence discusses various inventions by D.P. Ryabushinsky and innovative features