Springing frame for spotlight mirrors

Frontinating frame for spotlight mirrors: No. 23919. Supponent.09/12/1911.Issues 04/30/1913 / "Shuckert and K".- [B.M .: B. and., 1913].-[1] p., 1 l.Il .. -Description of a spring frame for spotlight mirrors.To the privilege of the Russian Society of Shuckert and Co., in the city of St. Petersburg, stated on September 12, 1911 (Owl. St. No. 49502).Class 4b.No. 23919. The privilege issued on April 30, 1913.Ex.: With a handle.litter..I. "Shuckert and Co.", Society (Petersburg) .1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS