Burglar-Alarm.
Description:
Patent for an "apparatus for protecting or guarding electric circuits; and it has for its object to protect or guard electric circuits, such as burglar-alarm circuits, from interference by unauthorized or mischievous agencies." (Lines 9-14) Includes instructions and illustrations.
Date:
June 22, 1897
Creator:
Sutton, Henry M. & Steele, Walter L.
Item Type:
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