"The Lectrolite Corporation was a tool and die manufacturer located on Hickory Street. The Lynch Manufacturing Corporation made air compressors. They were located at the end of Columbus Ave.
Also, one of the addresses for SK was:
SK Hand Tool Corporation
135 Hickory St, Defiance, OH 43512
The Lectrolite Corp. made wrenches (box-end, open end and combination) for SK for some time until SK bought them. They are nice. I own a NOS set of box ends in a Lectrolite tool roll (about a dozen wrenches). They have never been used.