Derpt leaflet: a socio-literary and political newspaper.1892, No. 40. 1892.

Basket for shafts of steam turbines: No. 22320. Declared.03/18/1906.Issue 31.08.1912 / h.A.Parsons.- [B.M .: B. and., 1912].-3993-3994 p., 1 liter.Il .. -Description of the sewn for shafts of steam turbines.To the privilege of a foreigner Ch.A.Parsons (Ch. A. Parsons), in the city of New Cestle on a secret, in England, declared on March 28, 1906 (okhr. St. No. 28994).Based on Art.198.16 Ust.Industry.According to the period of English patent No. 8547 - 1905, the action of this privilege extends not more than 7, 1919.Group III.No. 22320. August 31, 1912.I. Parsons, h.a..1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS