Class 178 TELEGRAPHY
| Printable Version[PDF] See notes regarding proper use of US-to-IPC Concordances. | ||
| U.S. Subclass | IPC8 Subclass | IPC8 Group |
|---|---|---|
| 1 | H 04 L | 15 / 00 |
| 2A | H 04 B | 3 / 20 |
| 2A | H 04 L | 5 / 18 |
| 2A | H 04 L | 15 / 00 |
| 2B | H 03 M | 5 / 00 |
| 2B | H 04 L | 15 / 00 |
| 2B | H 04 L | 25 / 49 |
| 2C | H 04 L | 12 / 40 |
| 2C | H 04 L | 15 / 00 |
| 2D | H 04 L | 12 / 18 |
| 2D | H 04 L | 15 / 00 |
| 2E | H 04 L | 12 / 00 |
| 2E | H 04 L | 12 / 18 |
| 2E | H 04 L | 15 / 00 |
| 2F | H 04 L | 12 / 00 |
| 2F | H 04 L | 15 / 00 |
| 2R - 3 | H 04 L | 15 / 00 |
| 4 - 4.1A | H 04 L | 15 / 34 |
| 4 - 4.1A | H 04 L | 21 / 00 |
| 4.1B | H 04 L | 12 / 06 |
| 4.1B | H 04 L | 15 / 34 |
| 4.1C | H 04 L | 12 / 12 |
| 4.1C | H 04 L | 15 / 34 |
| 4.1R | H 04 L | 15 / 34 |
| 4.1R | H 04 L | 21 / 00 |
| 15 | G 09 G | 1 / 00 |
| 15 | H 04 L | 15 / 34 |
| 15 | H 04 L | 17 / 16 |
| 16 | H 04 L | 15 / 24 |
| 16 | H 04 L | 17 / 16 |
| 17A | H 04 L | 17 / 02 |
| 17B | H 04 L | 17 / 02 |
| 17B | H 04 L | 17 / 12 |
| 17C | H 04 L | 15 / 04 |
| 17C | H 04 L | 17 / 04 |
| 17D | H 04 L | 15 / 00 |
| 17D | H 04 L | 15 / 20 |
| 17D | H 04 L | 17 / 00 |
| 17E | H 04 L | 15 / 00 |
| 17E | H 04 L | 17 / 00 |
| 17R | H 04 L | 15 / 00 |
| 17.5 | H 04 L | 13 / 08 |
| 17.5 | H 04 L | 15 / 18 |
| 18.01 - 18.03 | G 06 F | 3 / 041 |
| 18.01 - 18.03 | G 06 K | 11 / 06 |
| 18.01 - 18.03 | G 08 C | 21 / 00 |
| 18.04 | G 06 F | 3 / 043 |
| 18.05 | G 06 F | 3 / 045 |
| 18.06 | G 06 F | 3 / 044 |
| 18.06 | G 08 C | 21 / 00 |
| 18.07 - 18.08 | G 06 F | 3 / 046 |
| 18.07 - 18.08 | G 08 C | 21 / 00 |
| 18.09 | G 06 F | 3 / 042 |
| 18.11 | G 06 K | 11 / 06 |
| 19.01 - 19.07 | G 06 F | 3 / 033 |
| 19.01 - 19.07 | G 06 F | 3 / 041 |
| 19.01 - 19.07 | G 06 K | 11 / 06 |
| 19.01 - 19.07 | G 08 C | 21 / 00 |
| 20.01 - 20.04 | G 06 F | 3 / 041 |
| 20.01 - 20.04 | G 06 K | 11 / 06 |
| 20.01 - 20.04 | G 08 C | 21 / 00 |
| 21 | H 04 N | 1 / 024 |
| 23A | H 04 L | 1 / 00 |
| 23A | H 04 L | 15 / 24 |
| 23A | H 04 L | 15 / 34 |
| 23A | H 04 L | 17 / 16 |
| 23R - 25 | H 04 L | 15 / 24 |
| 23R - 25 | H 04 L | 15 / 34 |
| 23R - 25 | H 04 L | 17 / 16 |
| 26.1 | H 03 M | 7 / 00 |
| 26.1 | H 04 L | 21 / 00 |
| 27 | H 04 L | 15 / 24 |
| 27 | H 04 L | 15 / 34 |
| 27 | H 04 L | 17 / 16 |
| 28 - 29 | H 04 L | 15 / 24 |
| 28 - 29 | H 04 L | 15 / 34 |
| 28 - 29 | H 04 L | 17 / 24 |
| 30 | G 09 G | 1 / 00 |
| 30 | H 04 L | 15 / 24 |
| 30 | H 04 L | 15 / 34 |
| 30 | H 04 L | 17 / 16 |
| 31 - 32 | H 04 L | 15 / 24 |
| 31 - 32 | H 04 L | 15 / 34 |
| 31 - 32 | H 04 L | 17 / 16 |
| 33A | H 04 L | 15 / 24 |
| 33A | H 04 L | 17 / 16 |
| 33R | H 04 L | 17 / 18 |
| 33R | H 04 L | 17 / 22 |
| 33R | H 04 L | 25 / 42 |
| 33MP | H 04 L | 15 / 24 |
| 33MP | H 04 L | 17 / 16 |
| 34 - 35 | H 04 L | 15 / 24 |
| 34 - 35 | H 04 L | 15 / 34 |
| 34 - 35 | H 04 L | 17 / 24 |
| 36 | H 04 L | 15 / 24 |
| 36 | H 04 L | 15 / 34 |
| 36 | H 04 L | 17 / 16 |
| 37 | H 04 L | 9 / 00 |
| 37 | H 04 L | 15 / 24 |
| 37 | H 04 L | 15 / 34 |
| 37 | H 04 L | 17 / 16 |
| 38 - 42 | H 04 L | 15 / 24 |
| 38 - 42 | H 04 L | 15 / 34 |
| 38 - 42 | H 04 L | 17 / 16 |
| 43 | H 04 B | 5 / 00 |
| 45 | H 01 B | 11 / 14 |
| 45 | H 01 B | 11 / 16 |
| 45 | H 04 L | 5 / 10 |
| 45 | H 04 L | 25 / 46 |
| 46 | H 01 F | 17 / 08 |
| 47 - 48 | H 04 L | 5 / 10 |
| 47 - 48 | H 04 L | 25 / 46 |
| 47 - 48 | H 04 L | 25 / 62 |
| 49 | H 04 L | 5 / 02 |
| 62 | H 04 L | 15 / 34 |
| 63A | H 04 L | 25 / 20 |
| 63B | H 04 L | 25 / 02 |
| 63B | H 04 L | 25 / 40 |
| 63C | H 04 L | 25 / 02 |
| 63D | H 01 B | 7 / 00 |
| 63D | H 01 B | 11 / 02 |
| 63E | H 04 B | 3 / 40 |
| 63E | H 04 L | 1 / 00 |
| 63F | H 04 B | 3 / 20 |
| 63R | H 04 L | 5 / 14 |
| 63R | H 04 L | 25 / 03 |
| 63R | H 04 L | 25 / 06 |
| 64 | H 04 B | 3 / 02 |
| 65 | H 04 L | 25 / 18 |
| 66.1 - 66.2 | H 04 L | 27 / 00 |
| 67.1 | H 04 L | 27 / 18 |
| 69A | H 04 L | 25 / 02 |
| 69B | H 04 B | 3 / 28 |
| 69B | H 04 B | 3 / 32 |
| 69B | H 04 L | 25 / 08 |
| 69C | H 04 L | 5 / 14 |
| 69D | H 04 L | 25 / 06 |
| 69D | H 04 L | 25 / 08 |
| 69E | H 04 B | 3 / 02 |
| 69F | H 04 L | 25 / 06 |
| 69G | H 04 B | 3 / 46 |
| 69H | H 04 L | 1 / 08 |
| 69K | H 04 L | 25 / 02 |
| 69L | H 04 L | 1 / 14 |
| 69M | H 03 J | 7 / 02 |
| 69N | H 04 L | 25 / 49 |
| 69R | H 04 L | 1 / 00 |
| 69R | H 04 L | 25 / 03 |
| 69.6 | H 04 L | 12 / 12 |
| 70A - 70B | H 04 L | 25 / 20 |
| 70A - 70B | H 04 L | 25 / 52 |
| 70C | H 04 L | 13 / 10 |
| 70C | H 04 L | 25 / 00 |
| 70D - 70H | H 04 L | 25 / 00 |
| 70J | H 04 L | 25 / 20 |
| 70J | H 04 L | 25 / 52 |
| 70K | H 04 L | 25 / 00 |
| 70M | H 04 L | 25 / 20 |
| 70M | H 04 L | 25 / 52 |
| 70N - 70P | H 04 L | 25 / 00 |
| 70Q - 70R | H 04 L | 25 / 20 |
| 70Q - 70R | H 04 L | 25 / 52 |
| 70S - 70TS | H 04 L | 25 / 00 |
| 71.1 - 71.11 | H 04 L | 25 / 20 |
| 71.1 - 71.11 | H 04 L | 25 / 52 |
| 71.12 - 71.13 | H 04 L | 25 / 00 |
| 71.14 | H 04 L | 25 / 20 |
| 71.14 | H 04 L | 25 / 52 |
| 71.2 | H 04 L | 13 / 10 |
| 71.2 | H 04 L | 25 / 20 |
| 71.2 | H 04 L | 25 / 52 |
| 71.3 | H 04 L | 25 / 00 |
| 71.4 - 71.5 | H 04 L | 25 / 20 |
| 71.4 - 71.5 | H 04 L | 25 / 52 |
| 71.6 | H 04 L | 25 / 00 |
| 71.7 | H 04 L | 25 / 20 |
| 71.7 | H 04 L | 25 / 52 |
| 71.7 | H 04 L | 27 / 26 |
| 71.8 | H 04 L | 25 / 00 |
| 71.9 | H 04 L | 5 / 18 |
| 71.9 | H 04 L | 25 / 20 |
| 71.9 | H 04 L | 25 / 52 |
| 72 - 73 | H 04 L | 25 / 20 |
| 72 - 73 | H 04 L | 25 / 52 |
| 74 - 76 | H 04 L | 15 / 00 |
| 77 - 78 | H 04 L | 13 / 00 |
| 79 - 81 | H 04 L | 15 / 04 |
| 79 - 81 | H 04 L | 17 / 02 |
| 82A | H 04 L | 15 / 08 |
| 82B | H 04 L | 15 / 18 |
| 82B | H 04 L | 17 / 12 |
| 82R | H 04 L | 15 / 08 |
| 82R | H 04 L | 15 / 18 |
| 82R | H 04 L | 17 / 12 |
| 83 - 86 | H 04 L | 15 / 08 |
| 89 - 91 | H 04 L | 15 / 30 |
| 89 - 91 | H 04 L | 17 / 16 |
| 92 | H 04 L | 15 / 32 |
| 92 | H 04 L | 17 / 20 |
| 93 - 98 | H 04 L | 15 / 24 |
| 93 - 98 | H 04 L | 17 / 16 |
| 99.1 | H 04 L | 9 / 00 |
| 99.1 | H 04 L | 17 / 16 |
| 100 | H 04 L | 15 / 24 |
| 100 | H 04 L | 17 / 16 |
| 101 - 109 | H 01 H | 21 / 86 |
| 101 - 109 | H 04 L | 15 / 03 |
| 110 | H 01 H | 21 / 22 |
| 110 | H 04 L | 15 / 03 |
| 111 - 112 | G 11 B | 23 / 00 |
| 114 | H 04 L | 13 / 00 |
| 115 | G 09 B | 19 / 26 |
| 115 | H 04 L | 15 / 03 |
| 116 | H 01 T | 9 / 00 |
| 117 | H 04 B | 1 / 16 |
| 118 | H 04 L | 13 / 18 |
| 118 | H 04 L | 15 / 24 |
| 118 | H 04 L | 17 / 16 |
| 118 | H 04 L | 27 / 00 |
| 119 - 120 | H 04 L | 13 / 18 |