US Patent: 1,318,934
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| Gage
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Patentee:
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| Boyd S. Thompson (exact or similar names) - Grand Rapids, Kent County, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 23, 1918 |
| Granted: |
Oct. 14, 1919 |
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Joel Havens
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Description: |
| Application renewed 19 Aug., 1919. |
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