US Patent: 423,969
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Spirit-Level
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Patentee:
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Justus A. Traut (exact or similar names) - New Britain, CT |
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Patent Dates:
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Applied: |
Dec. 28, 1889 |
Granted: |
Mar. 25, 1890 |
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Ralph Brendler
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Description: |
This design covers an adjustment mechinism for level vials, which was used on Stanley's high-end levels for many years. |
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