Modification of a device for controlling spotlights from a long distance

The modification of the device for managing spotlights from a long distance: No. 27269. Supponent.11/27/1912.Issue 31.08.1914 / "Shuckert and K".- [B.M .: B. and., 1914].-[2] p., 1 l.Il .. -Description of the modifications of the device for controlling spotlights from distant distance.To the additional privilege of the Russian Society of Shuckert and Co., in Petrograd, declared on November 27, 1912 (okhr. St. No. 55442).(The initial privilege was issued to the same company on December 17, 1913, for No. 25677).Class 21f.No. 27269. The privilege issued on August 31, 1914..I. "Shuckert and Co.", Society (Petersburg) .1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS