Fred Locke wall insulator patent

[Trade Journal]

Publication: Western Electrician

Chicago, IL, United States
vol. 41, no. 20, p. 403, col. 3


ILLUSTRATED ELECTRICAL PATENT RECORD.

Issued (United States Patent Office) November 5, 1907.

 

NO. 870,187.  WALL INSULATOR
No. 870,187. Wall Insulator

 

870,187. Wall Insulator. Fred M. Locke, Victor, N. Y. Application filed July 18, 1907.

A wall insulator comprises an entrance tube and a pair of concavo-convex disks surrounding the tube and each provided with a series of concentric annular flanges projecting from their concave faces. (See cut.)

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Keywords:Fred Locke : Patent
Researcher notes: 
Supplemental information: Patent: 870,187
Researcher:Bob Stahr
Date completed:October 2, 2009 by: Bob Stahr;