Office Of Dg ( Sss)
Development of earphone and microphone technology, Fabrication of 300 ohm Impedance Electro Dynamic Earphone, Fabrication of 300 ohm Impedance Electro Magnetic Earphones, Fabrication of 10 kilo ohm Impedance and **** ohm DC Resistance Electro Magnetic Earphones, Fabrication of 19 ohm Impedance Electro_ Dynamic Earphone, Fabrication of 300 ohm Impedance Electro Magnetic Microphone, Fabrication of 75 ohm Impedance and 40 ohm Resistance Electro Magnetic Microphone, Fabrication of 7. 5 ohm Impedance Electro Mag
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