ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H03D0007100000 the signals to be mixed being applied between different pairs of electrodes 1
H03D0007120000 by means of semiconductor devices having more than two electrodes (H03D0007140000-H03D0007220000; take precedence);; 1
H03D0007140000 Balanced arrangements 1
H03D0007160000 Multiple frequency-changing (superheterodyne receivers H04B0001260000) 1
H03D0007180000 Modifications of frequency-changers for eliminating image frequencies 1
H03D0007200000 by means of transit-time tubes 1
H03D0007220000 by deflecting an electron beam in a discharge tube (H03D0007200000 takes precedence);; 1
H03D0009000000 Demodulation or transference of modulation of modulated electromagnetic waves (devices or arrangements for demodulating light, transferring the modulation of modulated light or for changing the frequency of light G02F0002000000) 1
H03D0009020000 Demodulation using distributed inductance and capacitance, e.g. in feeder lines 1
H03D0009040000 for angle-modulated oscillations 1
H03D0009060000 Transference of modulation using distributed inductance and capacitance 1
H03D0011000000 Super-regenerative demodulator circuits 1
H03D0011020000 for amplitude-modulated oscillations 1
H03D0011040000 by means of semiconductor devices having more than two electrodes 1
H03D0011060000 for angle-modulated oscillations 1