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Patents for Stephen D. Field | |||||
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Picture | Number | Date | Patentee | Title | |
314,242 | Mar. 24, 1885 | C.L. Healy | Armature for Dynamo Electric Machines | ||
513,992 | Feb. 06, 1894 | R. Eickemeyer | Method of and means for developing dyed stiff hat-bodies | ||
609,016 | Aug. 16, 1898 | R. Eickemeyer | Electric elevator |