4 Matching Results

Search Results

Results: 1 - 4

Cattle-Guard

Description: Patent for an improved cattle guard with two parts that is adapted to specifically fit either inside the railroad tracks or alongside them.
Date: October 28, 1919
Creator: Fisher, Thomas M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch-Stand.

Description: Patent for a switch stand that automatically switches to danger when unlocked and has independently rotating switch operating spindles and target spindles.
Date: October 19, 1915
Creator: Praetorius, Richard P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen