McKenna Process Company
Plant formerly located in Joliet, Illinois - ca. 1920.
United States patents granted to Edward W. McKenna
Note: the first and fifth patents are initially linked to edited pages on this
the middle three patents are directly linked to the USPTO website.

US Patent No. 522,228

US Patent No. 608,378

US Patent No. 608,379

US Patent No. 608,380

US Patent No. 635,577