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A procedure to make it impermeable to Air and gases produced in the metal oxide surface as poor and oxidizable Metals Iron, Nickel, etc.Employed as drivers, through the glass walls of the Incandescent Lamps
A procedure to make it impermeable to Air and gases produced in the metal oxide surface as poor and oxidizable Metals Iron, Nickel, etc.Employed as drivers, through the glass walls of the Incandescent Lamps
