The Robinson Wrench Co.


The Robinson Wrench Company (Middlefield, OH) - Incorporated 9/21/1921 by Charles Robinson, Harry A., Donald E., and Harry A. Robinson Jr., and Paul King.  We do find advertisements by hardware companies in the area selling the wrench.  However, we've not been able to locate an associated patent.  The company appears to have gone out of business in 1925.