US Patent: 1,410,283
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| Plumb and Level
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Patentee:
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| William Bengel (exact or similar names) - Newport, AR |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 26, 1921 |
| Granted: |
Mar. 21, 1922 |
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Ralph Brendler
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Description: |
| This is a fairly standard inclinometer-style level, built to be very heavy-duty. The inventor claims it to be "virtually indestructible" |
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