DE Patent: 622,974 - Control system for hydraulically driven tool machines, especially drilling machines


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DE Patent: DE-622,974

Steuerung fuer hydraulisch angetriebene werkzeug-, insbesondere bohrmaschinen
Control system for hydraulically driven tool machines, especially drilling machines

Patentee:

USPTO Classifications:

Tool Categories:

metalworking machines : metalworking machine mechanisms : hydraulic apparatus

metalworking machines : drilling and boring : drill presses

woodworking machines : wood drilling and boring : drill presses

Assignees:

Christen & Cie AG - Berne, Switzerland

Manufacturer:

Christen & Cie AG - Berne, Switzerland

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 28, 1931
Granted:	Dec. 10, 1935

Patent Pictures:

Espacenet patent
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