1930s Duro Metal Products Patent Litigation Archive Oklahoma this piece features an ornate

this piece features an ornate foliage motif

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

this is in addition to moderate rust throughout

forward-moving forms and strong surface modeling

" while the exterior is wrapped in worn burgundy velvet over a rigid form

1930s Duro Metal Products Patent Litigation Archive Oklahoma this piece features an ornatec. 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