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| Date: | 1910 |
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| Description: | Arthur Pratt Warner, Wisconsin's first aviator, in front of the office of the Warner Instrument Company in Beloit. Warner, who held the patent for an autom... |
| Date: | 01 29 1946 |
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| Description: | Schoelkopf Manufacturing Company, 320 North 3rd Street, between East Johnson Street and Pennsylvania Avenue. Louis Schoelkopf invented and manufactured the... |
| Date: | 06 15 1927 |
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| Description: | Schoelkopf Manufacturing Company, manufacturers of Air-Lec power door operators. The doors are in an open position, view from indoors looking out towards t... |
| Date: | 1912 |
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| Description: | Unidentified man (inventor?) seated at and showing a foot-powered (?) milking machine. He is outdoors near a stone building. |
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| Description: | Actors portraying I.M. Singer and his friend George Zieber with the first sewing machine. |
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| Description: | Actors portray I.M. Singer and George Zieber examining an early sewing machine. |
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| Description: | Oscar Zerk is sitting at his desk in his office holding a Zerk grease gun in his hand. There is a taxidermied owl on the cabinet on the right, and a large ... |
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| Description: | Oscar Zerk is sitting at a desk holding a paper in his hand. The room is decorated with two taxidermied birds, and a large picture window is behind the des... |
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| Description: | An exhibit of petrified wood sections and other objects on tables and display cases in the Zerk Museum. Paintings, photographs, jewelry and other objects a... |
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