US Patent: 2,129,979
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| Measuring Device
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Patentees:
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| Carl Westervelt (exact or similar names) - Cadwell, NJ |
| George L. Storm (exact or similar names) - West Orange, NJ |
| Arthur Kaufmann (exact or similar names) - Essex Fells, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 08, 1936 |
| Granted: |
Sep. 13, 1938 |
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Joel Havens
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