US Patent: 2,951,342
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| Electro-hydraulic servo system
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Patentees:
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| David E. Lundeen (exact or similar names) - Sidney, OH |
| Wayne H. Ulman (exact or similar names) - Clinton Township, OH |
| Nagle V. Gusching (exact or similar names) - Clinton Township, OH |
| Harold E. Boyer (exact or similar names) - Anna, OH |
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Patent Dates:
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| Applied: |
Nov. 14, 1957 |
| Granted: |
Sep. 06, 1960 |
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Joel Havens
"Vintage Machinery" entry for Monarch Machine Tool Co.
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