US Patent: 3,432,934
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Sine plate assembly
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Patentee:
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Hermann Schmidt (exact or similar names) - East Hartford, CT |
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Patent Dates:
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Applied: |
Aug. 30, 1966 |
Granted: |
Mar. 18, 1969 |
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Joel Havens "Vintage Machinery" entry for Hermann Schmidt Co.
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Description: |
"A primary object of this invention is to provide an improve sine plate particularly suited for quick and easy manufacture and assemble and which will provide long reliable service..." |
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