| CA Patent: CA-99,909 
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| Scaffold Echafaud
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| Patentees: |  
 | Charles H. Wheeler (exact or similar names) - Detroit, Wayne County, MI |  | Elijah McCoy (exact or similar names) - Detroit, Wayne County, MI |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | May 28, 1906 |  
| Granted: | Jul. 03, 1906 |  CIPO Data
 Espacenet patent
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                        Joel Havens
 Wikipedia biography of Elijah McCoy
 
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| Description: |  | The inventor was born in Canada to fugitive slaves from Kentucky. He moved to Scotland where he was certified as a mechanical engineer, and then rejoined his family who in the meantime had moved to Michigan. |  |