Koster insulator patent

[Trade Journal]

Publication: The Electrical Engineer - London

London, England
vol. 12, no. 9, p. 216, col. 1

PROVISIONAL PATENTS, 1893.

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AUGUST 21.

15907. Improved insulator for telegraph and telephone wires. Henry Koster, 9, Warwick-court, Gray's-inn, London.

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Keywords:Patent : Foreign
Researcher notes: 
Supplemental information: 
Researcher:Bob Stahr
Date completed:November 29, 2009 by: Bob Stahr;