US Patent: 3,181,252
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| Teaching device (tutor toy)
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Patentees:
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| Adrian B. Sanford (exact or similar names) - Portola Valley, CA |
| Hans Goldschmidt (exact or similar names) - Atherton, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 17, 1962 |
| Granted: |
May 04, 1965 |
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Jeff Joslin
Vintage Machinery entry for Magna Engineering Corp.
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Description: |
| Of interest because co-inventor Goldschmidt also designed the Shopsmith combination woodworking machines. |
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