Signal Lock For Mail Boxes
Description:
Patent for a signal lock for mail boxes. This "invention relates to devices for locking the signals used on house letter-boxes, and has for its object the provision of a signal lock secured to the inside of the mail-box" (lines 9-13). Illustrations included.
Date:
October 23, 1906
Creator:
Patterson, Samuel & Wiseman, John W.
Item Type:
Refine your search to only
Patent