US Patent: 1,003,863
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Listing Indicator
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Patentee:
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Joseph Arnet (exact or similar names) - Chicago, IL |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Feb. 06, 1911 |
Granted: |
Sep. 19, 1911 |
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Ralph Brendler
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Description: |
This is a simple pendulum level designed for use in a boat or airplane to determine the angle of listing in two perpendicular dimensions. |
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