ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H04B0001000000 Details of transmission systems, not covered by a single one of groups ; H04B0003000000-H04B0013000000; Details of transmission systems not characterised by the medium used for transmission 1
H04B0001020000 Transmitters 1
H04B0001030000 Constructional details, e.g. casings, housings 1
H04B0001034000 Portable transmitters 1
H04B0001036000 Cooling arrangements 1
H04B0001040000 Circuits 1
H04B0001060000 Receivers 1
H04B0001080000 Constructional details, e.g. cabinet 1
H04B0001100000 Means associated with receiver for limiting or suppressing noise or interference 1
H04B0001120000 Neutralising, balancing, or compensation arrangements 1
H04B0001140000 Automatic detuning arrangements 1
H04B0001160000 Circuits 1
H04B0001180000 Input circuits, e.g. for coupling to an aerial or a transmission line (coupling networks between aerials or lines and receivers independent of the nature of the receiver H03H) 1
H04B0001200000 for coupling gramophone pick-up, recorder output, or microphone to receiver 1
H04B0001220000 for receivers in which no local oscillation is generated 1