US Patent: 1,947,862
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Special High Speed Drive for the Spindle of Boring Machine and Other Machine Tools
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Patentees:
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Henry M. Lucas (exact or similar names) - Cleveland Heights, Cuyahoga County, OH |
Hallis N. Stephan (exact or similar names) - Cleveland, Cuyahoga County, OH |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Jan. 09, 1932 |
Granted: |
Feb. 20, 1934 |
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Joel Havens "Vintage Machinery" entry for Lucas Machine Tool Co.
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