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U.S. Typewriter Patents 1829-1951

Patent Date
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Patent # Assignors Name(s) Assignors Prename(s) Patented Item Assignor to: Country Category
Patent Date
YYYY-MM-DD
Patent # Assignors Name(s) Assignors Prename(s) Patented Item Assignor to: Country Category

Source: Dirk Schumann's "Patentbase" DVD.