US Patent: 1,615,745
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| Square
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Patentee:
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| Edwin W. Delph (exact or similar names) - New Orleans, LA |
| USPTO Classifications: |
| 33/33 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 07, 1925 |
| Granted: |
Jan. 25, 1927 |
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Ralph Brendler
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Description: |
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This square features two rows of teeth built into the spine of the blade.
Actuating a lever in the square stock moves these teeth, thus marking
the stuff and obviating the need for a pencil.
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