<span>Typed and handwritten draft, notes, and research materials relating to chapter 11 of biography of Charles F. Brush, Sr., written by Margaret Richardson, regarding patent number </span><span>337,299, storage battery improvements invented by BrushCharles F. Brush, Sr., PapersSeries 11: Margaret Richardson's Biography of Charles F. Brush (1948-1954)Subseries 1: ChaptersBox 33Folder 5</span>

Chapter 11. Patent 337,299: The Brush Storage Battery, 1882

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