US Patent: 928,037 
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| Dynamo-electric machine
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	        Patentee:
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 | William H. Frost (exact or similar names) - Schenectady, NY |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Jul. 25, 1904 | 
 
| Granted: | 
Jul. 13, 1909 | 
 
 
 
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                        Jeff Joslin Vintage Machinery entry for General Electric Co. 
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        Description: |  
| "The object of my present invention is the production of a revolving field magnet which is simple and easy of construction and is well adapted to sustain the stresses produced by its operation at high speeds." |  
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