Griswold made much more than just a line of cookware. Did you know that Griswold also made, and held the patent for, a burglar Alarm? I didn’t think so. Inventors John Harvey and David Shields, assigned to Matthew Griswold. Application March 1, 1893. Patent granted […]
Tag: Matthew Griswold
Inventor: L. McKinney. Assigned to Griswold Mfg. Co. Applied for May 9, 1928. Patent granted Oct. 21, 1930. #1,778,808.