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U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 39
//7\/£T///7r. <C^&y*-xJL*-<w Q/iv>. <x>Osw& &&. (No Model.) No. 473,424, 3 Sheets—Sheet 2. A. M. LANE. CALENDAR CLOCK. Patented Apr. 19, 1892. Pg.2. … 11i * 11 ^i fifty. (No Model.) No. 473,424. 3 Sheets—Sheet 3. A. M. LANE. CALENDAR CLOCK. Patented Apr. 19, 1892.Clocks and watches
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