| Patents for Christen & Cie AG |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| CH-129,662 | Jan. 02, 1929 | . | Belt tensioning device | belt tensioners |
| DE-622,974 | Dec. 10, 1935 | . | Control system for hydraulically driven tool machines, especially drilling machines | hydraulic apparatus |
| CH-324,773 | Oct. 15, 1957 | O. Amiet | Machine tool chuck | drill press chucks |
| CH-330,589 | Jun. 15, 1958 | O. Amiet | Method for sharpening drill bits and machine for implementing this method | drill sharpening machines |
| CH-333,287 | Oct. 15, 1958 | O. Amiet | Device for sharpening drill bits using a grinding wheel | drill sharpening machines |
| CH-348,624 | Aug. 31, 1960 | . | Drill bit sharpening machine | drill sharpening machines |
