Class 381 ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES
Printable Version[PDF] See notes regarding proper use of US-to-IPC Concordances. | ||
U.S. Subclass | IPC8 Subclass | IPC8 Group |
---|---|---|
1 | H 04 R | 5 / 00 |
2 | H 04 H | 20 / 47 |
2 | H 04 H | 20 / 88 |
2 | H 04 H | 40 / 36 |
3 - 14 | H 04 H | 20 / 48 |
3 | H 04 H | 40 / 45 |
4 - 10 | H 04 H | 40 / 54 |
11 | H 04 H | 40 / 81 |
12 | H 04 H | 40 / 54 |
13 | H 04 H | 40 / 72 |
15 - 16 | H 04 H | 20 / 49 |
17 - 23.1 | H 04 R | 5 / 00 |
23.1 | H 04 R | 25 / 00 |
26 - 28 | H 04 R | 5 / 00 |
54 | G 10 L | 21 / 00 |
55 | H 03 G | 11 / 00 |
56 | H 04 R | 29 / 00 |
57 | H 03 G | 3 / 20 |
58 - 60 | H 04 R | 29 / 00 |
61 - 65 | H 03 G | 3 / 00 |
66 | H 04 B | 3 / 20 |
67 | A 61 B | 7 / 04 |
70 | A 61 F | 2 / 20 |
71.1 - 72 | A 61 F | 11 / 06 |
71.1 - 71.9 | G 10 K | 11 / 16 |
71.1 - 71.9 | H 03 B | 29 / 00 |
73.1 | H 04 R | 3 / 02 |
74 | H 04 R | 1 / 10 |
75 | H 04 R | 27 / 04 |
76 | H 04 R | 27 / 00 |
77 - 78 | H 04 B | 3 / 00 |
79 | H 04 B | 5 / 00 |
80 - 81 | H 04 B | 3 / 00 |
82 - 85 | H 04 R | 27 / 00 |
86 | H 04 B | 1 / 00 |
87 | H 04 R | 1 / 02 |
89 | H 04 R | 1 / 02 |
91 | H 04 R | 1 / 02 |
92 | H 04 R | 3 / 00 |
93 | H 04 B | 15 / 00 |
94.1 - 94.9 | H 04 B | 15 / 00 |
95 - 96 | H 04 R | 3 / 00 |
97 | H 04 R | 1 / 40 |
98 - 101 | H 03 G | 5 / 00 |
102 | H 03 G | 9 / 00 |
103 | H 03 G | 5 / 00 |
104 - 105 | H 03 G | 3 / 00 |
106 | H 03 G | 7 / 00 |
107 - 109 | H 03 G | 3 / 00 |
110 | H 03 G | 3 / 20 |
110 - 117 | H 04 R | 3 / 00 |
118 | G 10 H | 1 / 00 |
119 | H 04 B | 1 / 00 |
120 - 121 | H 03 F | 99 / 00 |
122 | H 04 R | 3 / 00 |
123 | H 02 B | 1 / 00 |
124 | G 09 F | 27 / 00 |
150 - 152 | H 04 R | 25 / 00 |
160 - 167 | H 04 R | 25 / 00 |
170 - 182 | H 04 R | 25 / 00 |
184 - 186 | H 04 R | 25 / 00 |
189 - 191 | H 04 R | 25 / 00 |
300 - 311 | H 04 R | 5 / 02 |
312 - 331 | H 04 R | 25 / 00 |
332 - 354 | H 04 R | 1 / 02 |
332 - 336 | H 04 R | 9 / 06 |
337 - 354 | H 04 R | 1 / 20 |
355 - 369 | H 04 R | 9 / 08 |
355 - 369 | H 04 R | 11 / 04 |
355 - 369 | H 04 R | 17 / 02 |
355 - 369 | H 04 R | 19 / 04 |
355 - 369 | H 04 R | 21 / 02 |
370 - 384 | H 04 R | 25 / 00 |
385 | H 04 R | 1 / 00 |
386 - 395 | H 04 R | 1 / 02 |
396 - 433 | H 04 R | 1 / 00 |
396 - 433 | H 04 R | 9 / 06 |
396 - 433 | H 04 R | 11 / 02 |