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Method of and Apparatus for Protecting Electric Circuits.
Patent for a method of and apparatus for protecting electric circuits from unauthorized use. The inventor uses the arrangement of circuits described in an expired patent (No. 110,362).
Date:
April 23, 1895
Creator:
Oram, John M.
Object Type:
Patent
System:
The Portal to Texas History
The Southern Mercury. (Dallas, Tex.), Vol. 15, No. 17, Ed. 1 Thursday, April 23, 1896
Weekly newspaper from Dallas, Texas that includes local, state and national news along with extensive advertising.
Date:
April 23, 1896
Creator:
Park, Milton
Object Type:
Newspaper
System:
The Portal to Texas History
Dilator.
Patent for a dilator meant to enlarge the urethral and other canals of the human body. It is meant of "elastic material and capable of distention, or dilation, under the pressure of air, water, or other fluid introduced and to combine with said dilator means whereby its uniform enlargement under internal pressure shall take place without increase of length, thereby avoiding the objection common to all, rubber and similar structures heretofore, that interior pressure produced elongation at the expense of increase in diameter, while any inequality of strength, or thickness, caused unequal expansion" (lines 13-24).
Date:
April 23, 1895
Creator:
Parker, Elisha J.
Object Type:
Patent
System:
The Portal to Texas History
The Southern Mercury, Texas Farmers' Alliance Advocate. (Dallas, Tex.), Vol. 10, No. 17, Ed. 1 Thursday, April 23, 1891
Weekly newspaper from Dallas, Texas that includes local, state and national news along with extensive advertising.
Date:
April 23, 1891
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History