US Patent: 914,978
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| Overflow device for pressure-tanks, &c.
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Patentee:
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| William H. Ridgway (exact or similar names) - Coatesville, PA |
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Patent Dates:
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| Applied: |
Sep. 07, 1906 |
| Granted: |
Mar. 09, 1909 |
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Jeff Joslin
Vintage Machinery entry for Craig Ridgway & Son Co.
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Description: |
| "My invention is especially adapted for use in connection with the steam hydraulic hoist for which application for patent was filed by me on the 30th day of September, 1904, Serial No. 226,690, and allowed April 9, 1906 (patent 833,632)..." |
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