Flashlight with a regenerative gas burner

A flashlight with a regenerative gas burner: No. 4074/233.Declared.11/14/1886.Issuance on 12/31/1888 / Friedrich Siemens.- [St. Petersburg]: Type.Exped.Polot.state.papers, 1888. -2 p., 1 l.Il .. -The privilege issued from the Department of Trade and Manufactory in 1888 Foreign Friedrich Siemens, to a lantern with a regenerative gas burner.Before the text: 233.Ex.: With a handle.litter..I. Siemens, Friedrich. 1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS