A way to give insulating properties to the material surrounding the electric wire or adjacent to it

A way to give insulating properties to the material surrounding the electric wire or adjacent to it: No. 7692. Declared.08/01/1900.Issue 31.03.1903 / N. Tesla.- [B.M .: B. and., 1903].-605-608 p., 1 l.Il .. -Description of the method of giving insulating properties to the material surrounding the electric wire or adjacent to it.To the privilege of a foreigner N. Tesla (N. Tesla), in the city of New York, declared on August 1, 1900.Group XI.No. 7692. March 31, 1903.I. Tesla, N..1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS