| US Patent: 553,878 
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| Valve-motion for pumps | 
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| Patentee: |  |
 | John Stumpf (exact or similar names) - Charlottenburg,  Germany |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Feb. 16, 1893 |  
| Granted: | Feb. 04, 1896 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | This patent was preceded by number European patents; see the patent specification for a list. |  |