US Patent: 407,580
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| Pumping Engine
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Patentee:
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| Henry Davey (exact or similar names) - Westminster, Middlesex County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 06, 1889 |
| Granted: |
Jul. 23, 1889 |
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Joel Havens
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Description: |
| Patented in England, 30 Sep 1887, # 13,270 |
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