US Patent: 2,397,109
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| Device for precision drawing
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Patentee:
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| Oscar C. Hedin (exact or similar names) - Cleveland Heights, OH |
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Patent Dates:
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| Applied: |
Oct. 05, 1943 |
| Granted: |
Mar. 26, 1946 |
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Jeff Joslin
Vintage Machinery entry for Weldon Tool Co.
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Description: |
| "This invention relates principally to devices and to tools for use by such devices, for cutting emulsion coatings known as 'master drawings,' for use in optical inspection..." |
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