US Patent: 1,645,473
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Surface test indicator
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Patentee:
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Alfred George Cash (exact or similar names) - Rochester, NY |
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Patent Dates:
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Applied: |
Jan. 17, 1927 |
Granted: |
Oct. 11, 1927 |
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Joel Havens
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Description: |
"The feature of this invention is the construction of the indicator so that a reading may be obtained from either side or face of the indicator..." |
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