1930s Duro Metal Products Patent Litigation Archive whist complete with its three-hour limit

complete with its three-hour limit dial and coin slot marked "Insert Coins Here

1900-1920s

from whatever scrap wood was available leading to a homemade kind of appearance and quality

No key included

Both legs show heavy

1930s Duro Metal Products Patent Litigation Archive whist complete with its three-hour limitc. 1920s 1950s; Duro Metal Products Company Chicago, IL Extensive archive of patent related materials centered around mechanical locking and tool adjacent innovations, including diagrams, typed legal correspondence, engineering drawings, and original patent documentation. The group appears to document Duro Metal Products' involvement in a dispute and or licensing negotiations surrounding inventions attributed to Johnson Lock Co., with particular