1930s Duro Metal Products Patent Litigation Archive Oklahoma It features five drawers

It features five drawers

comprising curved exterior skin riveted to a series of internal formed ribs

Handle adds 5

time-worn steel of the cabinet

1930s Duro Metal Products Patent Litigation Archive Oklahoma It features five drawersc. 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