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US Patent: 2,728,242
Hydraulic control apparatus
Patentee:
Charles B. De Vlieg (exact or similar names) - Farmington, MI

USPTO Classifications:
137/625.15, 303/52, 74/333, 74/364

Tool Categories:
metalworking machines : metalworking machine mechanisms : hydraulic apparatus

Assignees:
None

Manufacturer:
DeVlieg Machine Co. - Royal Oak, MI

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 20, 1952
Granted: Dec. 27, 1955

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for DeVlieg Machine Co.
Description:
This patent number was seen in a brochure for a "Spirametic Spindle Head" for Series 3B and 4B machines.

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