| US Patent: 1,772,514 
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| Four-way blocking clamp | 
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| Patentee: |  |
 | James Hoogerhyde (exact or similar names) - Belmont, MI |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | Sep. 19, 1928 |  
| Granted: | Aug. 12, 1930 |  USPTO (New site tip)
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                        Carl Matthews
 "Vintage Machinery" entry for Imperial Metal Products Co.
 "Vintage Machinery" entry for Nels J. Billstrom
 
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| Description: |  | Inventor Hoogerhyde had an earlier patent, 1,729,111, that was assigned to lathe maker Imperial Metal Products Co. of Grand Rapids, MI. |  |