Патенты

1929: roll cut		1932: Utility knife sharpener
1937: Circular knife sharpener		1938: Utility circular blade grinder
1949: spindles		1950: adjustment (491153)
1950: adjustment (674557)		1955: drive (1055995)
1956: drive (15221)		1957: drive (1147496)
1960: drive (342864)		1963: Coolant water cleaning
1965: cutting duplicator: «Schneidenabziehapparat»		1969: Cooling water purification
1972: roll Grinders		1972: Quick Change Chuck
1974: sludge discharge		1991: Rotary table grinder
1996: MSA