… 1. Speech training apparatus for deaf persons consisting mainly of two microphones (one used by the instructor, the other by the pupil), an audio-frequency … amplifier and one set of headphones, each headphone being individually controlled to compensate for variations in …
… 1. Conveyor belting in the length, in various widths (15 cm or more), consisting of a series of slightly flattened spirals of carbon steel wire, each linked to the next by inserting a crimped section of similar wire and welding its …
… 1. Ilmenite ore , cin the form of a black or dark brown powder containing … as grinding. The product is used as a weighing agent to increase the density in offshore well drilling. Application …
… 1. Free flowing white powder containing more than 98.5 % by weight of anhydrous disodium sulphate. It is obtained from a mixture of mirabilite (disodium sulphate …
… means of the slide fastener (zipper). It can also be worn independently. The two garments are presented together. … repellent, a middle layer of thin plastic sheeting and an inner layer of 100 % polyester knitted pile fabric. The knitted pile fabric is on the inside of the garment. Application of GIRs 1 (Note 1 (c) to …
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