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US Patent: 3,230,516
Control System for Machine Tools and the Like
Patentees:
Leif Eric De Neergaard, deceased (Estate of) (exact or similar names) - Chicago, Cook County, IL
Northern Trust Co., Executor (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
318/162, 318/568.1, 318/608, 360/79

Tool Categories:
metalworking machines : machine tool controls

Assignees:
Frederic W. Olmstead, Trustee - Washington, DC
Hans W. Trechsel, Trustee - Madison, Dane County, WI
Deryck A. Gerard, Trustee - Minneapolis, Hennepin County, MN
Norman S. Parker, Trustee - Evanston, Cook County, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 13, 1959
Granted: Jan. 18, 1966

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Gisholt Machine Co.

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