Elastic connection of two shafts using a telescopic roller

The elastic connection of two shafts using a telescopic roller: No. 25844. Supponent.03/12/1912.Issues on 01/16/1914 / "Marconi, a company of unprofitable telegraphs."- [B.M .: B. and., 1914].-[1] p., 1 l.Il .. -Description of the elastic connection of two shafts using a telescopic roller.To the privilege of a foreign company "Unprofitable Telegraphs of Marconi, Limited Liability Company" (Marconis Wireless Telegraph Company (Limited), in London, stated on March 12, 1912 (og. St. No. 52094).Class 47c.No. 25844. The privilege issued on January 16, 1914.I. "Marconi", a company of unprofitable telegraph with limited liability (London) .1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS