US Patent: 1,772,514
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| Four-way blocking clamp
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Patentee:
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| James Hoogerhyde (exact or similar names) - Belmont, MI |
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Patent Dates:
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| Applied: |
Sep. 19, 1928 |
| Granted: |
Aug. 12, 1930 |
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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. |
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