US Patent: 948,570
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| Spirit-Level
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Patentee:
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| Eldor Andersen (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 07, 1909 |
| Granted: |
Feb. 08, 1910 |
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Ralph Brendler
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Description: |
| This level features a built in electric light to facilitate reading in dim conditions. |
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