1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Annunciator.
Patent for improvement in annunciator by “providing a circuit-closing attachment for annunciators by means of which an electric lamp will be lit when the annunciator-drop falls.” (Lines 15-18) Illustration is included.
Date:
October 20, 1891
Creator:
Fouts, Lambert F.
System:
The Portal to Texas History