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US Patent: 723,840
Controlling Switch System
Patentee:
Adolph L. De Leeuw (exact or similar names) - Hamilton, Butler County, OH

USPTO Classifications:
192/48.2, 192/84.1, 200/11J, 307/101, 361/167

Tool Categories:
metalworking machines : machine tool controls

Assignees:
Niles Tool Works - Hamilton, Butler County, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 13, 1902
Granted: Mar. 31, 1903

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Niles Tool Works

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