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Box 1

 Container

Contains 1 Result:

Patent: Oil Reclaiming Device, 1931 - 1933

 File — Box: 1, Folder: 13
Identifier: Folder 13
Scope and Contents From the Collection: The Frank M. Mason papers fill one box and include biographical materials, correspondence, speech drafts and related materials.The biographical materials include a few clippings, mainly relating to Mason's retirement: Mason's registration to practice before the U.S. Patent Office; a certificate marking his election as a civil member of the American Society of Naval Engineers; his registration as a professional engineer in Illinois; and obituaries.The general...
Dates: 1931 - 1933