involving electrical transmission means only, e.g. controlled by magnetic tape

Full Title

Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like (machines or devices so-controlled for grinding the edges of lenses B24B9/14; for grinding or polishing optical lens surfaces B24B13/06; for grinding non-circular cross-sections B24B19/08; for grinding trochoidal surfaces B24B19/09; for grinding cams B24B19/12; for grinding turbine blades or the like B24B19/14; such control means per se B23Q33/00, B23Q35/00, G05); Accessories therefor > involving electrical transmission means only, e.g. controlled by magnetic tape