McKercher Wrench & Tool Company (Jackson, MI) - A 3/11/1902 article from The Railway Age reports the officers of the company as Robert Lake - Pres., H. S. Griggs - VP, H. U. Ulrickson - Treas., George Hastings Treasurer, and George McKercher - Superintendent. Incorporated 3/20/1902 to produce a newly patented wrench by:
George McKercher Patent #643,522 - Wrench - Self-Assigned - 2/13/1900
George McKercher Patent #729,504 - Wrench - Assigned to McKercher Wrench & Tool Co. - 5/26/1903
George McKercher Patent #771169 - Wrench - Assigned to McKercher Wrench & Tool Co. - 9/27/1904
Article about the Mckercher wrench (2nd patent) from the 3/14/1903 edition of The Sanitary & Heating Age.
A 1905 Michigan insection report shows the company with 3 employees. We found no further mention of this company after 1905.