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US Patent: 3,308,695
Apparatus for Machining a Helical Element
Patentee:
Gilbert H. Hagerman (exact or similar names) - New Carlisle, OH

USPTO Classifications:
82/11, 82/110, 82/130

Tool Categories:
metalworking machines

Assignees:
Robbins & Myers, Inc. - Springfield, OH

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Sep. 16, 1964
Granted: Mar. 14, 1967

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Robbins & Myers, Inc.

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