High-frequency wattmeter of the therapeutic apparatus, on the board of which there is a multiplication circuit through quadrature. The quadrupling […]
A book and magazine cover for covering blocks picked up off-neck, stitched with threads, edged and trimmed on three sides, […]
The dust and gas burner contains a housing with a box for supplying central air from a pipe for supplying […]
The air heating system includes an air heat pump and a Maisotsenka heat and mass exchange device of the indirect […]