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 |
USPTO (New site tip) Google Patents
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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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