METHOD FOR PREPARING MEASURED LENGTHS OF DENTAL FLOSS

摘要

1369117 Magnetic fastenings R J ESPINOSA 22 March 1972 [24 March 1971] 13334/72 Heading E2A [Also in Division A5] A magnetic clamp 27 consists of two bars 28, 29 of heat insulating material held together, and to a supporting frame 19, by magnets 30-33 at the ends of the bars.