Image: 1388547 fig1&2
1388547_fig1&2.jpg (321 × 220 pixels, file size: 47 KB, MIME type: image/jpeg)
Description: figures 1 & 2 from J.E. Burns knife patent
Title: 1388547 fig1&2
Credit: US Patent 1,388,547
Author: see patent for draftsman
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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