US Patent: 1,710,414
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Drafting Implement Compass for Drawing Parallel Lines
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Patentee:
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| Hector Falletta (exact or similar names) - Los Angeles, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 07, 1927 |
| Granted: |
Apr. 23, 1929 |
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Ralph Brendler
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Description: |
| This compass features a third arm and fence to allow it to be used for drawing parallel lines. It is designed for drawing musical notations. |
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