Complex lens with chromatic, spherical and anastigmatic correction

A complex lens with chromatic, spherical and anastigmatic correction: No. 8926. Supponent.02/07/1900.Issuance 05/31/1904 / "Karl Zeiss".- [B.M .: B. and., 1904].-1135-1137 p., 1 l.Il .. -Description of a complex lens with chromatic, spherical and anastigmatic correction.To the privilege of a foreign company "Carl Zeiss", in the city of Yen, in Germany, declared on February 7, 1900.Group VI.No. 8926. May 31, 1904.I. Zeiss Karl, company.Yena 1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS