U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 127
Jlj£ U7i~t7ze/s//se/sf. V? JZnventsv iNo Model. No. 478,155, 2 Shetts—Sheet 2. G. C. DARCHE. ELECTRIC ALARM CLOCK. Patented July o … #;4 &<n/j&,j <n^^c<t4r?<J -272tr<?7zf6)t~ Georae C3?arc%>e< Uni ed States Patent Office. GEORGE C. DARCTIE, OF CHICAGO, ILLINOIS.ELECTRIC ALARM-CLOCK. SPECIFICATION forming part of Letters Patent No. 478,155, dated July 5, 1892. Application filed June 1, 1891. Serial…
Clocks and watches
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