Air movement device

Device for the message of a screw -shaped air movement: No. 27105. Supponent.09/02/1911.Issuance on 07/31/1914 / LLP "Babko and Vilkox".- [B.M .: B. and., 1914].-[2] p., 1 l.Il .. -Description of the device for the message of the screw -shaped movement of the air.To the privilege of a foreign company Babko and Vilkok, with limited liability "(BabCock & Wilcox, Limited), in London, declared on September 2, 1911 (okh. St. No. 494001).Class 24i.No. 27105. The privilege issued on July 31, 1914..I. LLP "Babcok and Vilkox" (London) .1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS