Class 175 BORING OR PENETRATING THE EARTH
| Printable Version[PDF] See notes regarding proper use of US-to-IPC Concordances. | ||
| U.S. Subclass | IPC8 Subclass | IPC8 Group |
|---|---|---|
| 1 | E 21 B | 47 / 00 |
| 2 | E 21 B | 7 / 00 |
| 3 | E 21 B | 25 / 00 |
| 3.5 | E 21 B | 7 / 00 |
| 4 | E 21 B | 49 / 02 |
| 4.5 | E 21 B | 7 / 00 |
| 4.5 | E 21 B | 43 / 116 |
| 4.51 | E 21 B | 43 / 119 |
| 4.52 - 4.6 | E 21 B | 7 / 00 |
| 4.52 - 4.59 | E 21 B | 43 / 116 |
| 4.6 | F 42 D | 3 / 00 |
| 4.6 | G 21 J | 3 / 02 |
| 5 - 6 | E 21 B | 7 / 12 |
| 5 | E 21 B | 15 / 02 |
| 5 | E 21 B | 19 / 09 |
| 6 | E 21 B | 7 / 124 |
| 6 | E 21 B | 25 / 18 |
| 7 | E 21 B | 7 / 128 |
| 7 - 10 | E 21 B | 15 / 02 |
| 8 | E 21 B | 7 / 132 |
| 9 | E 21 B | 7 / 136 |
| 10 | E 21 B | 7 / 12 |
| 10 | E 21 B | 7 / 124 |
| 11 - 15 | E 21 B | 7 / 14 |
| 11 - 16 | E 21 C | 37 / 16 |
| 16 - 17 | E 21 B | 7 / 00 |
| 16 | E 21 B | 7 / 15 |
| 17 | C 09 K | 8 / 02 |
| 17 | E 21 B | 36 / 00 |
| 18 | F 25 C | 5 / 04 |
| 19 - 23 | E 21 B | 7 / 26 |
| 19 - 23 | E 21 B | 11 / 02 |
| 24 - 38 | E 21 B | 44 / 00 |
| 25 | E 21 B | 21 / 08 |
| 27 | E 21 B | 3 / 06 |
| 27 | E 21 B | 19 / 08 |
| 38 | C 09 K | 8 / 02 |
| 38 | E 21 B | 21 / 08 |
| 39 | E 21 B | 12 / 02 |
| 40 - 41 | E 21 B | 47 / 00 |
| 40 | E 21 B | 47 / 18 |
| 42 | C 09 K | 8 / 02 |
| 42 | E 21 B | 49 / 00 |
| 44 - 45 | E 21 B | 25 / 16 |
| 44 - 45 | E 21 B | 47 / 02 |
| 46 | E 21 B | 21 / 00 |
| 46 | E 21 B | 27 / 00 |
| 46 | E 21 B | 37 / 00 |
| 48 | C 09 K | 8 / 02 |
| 48 | E 21 B | 21 / 08 |
| 49 | E 21 B | 7 / 00 |
| 50 | E 21 B | 47 / 00 |
| 50 | E 21 B | 47 / 026 |
| 50 | E 21 B | 49 / 00 |
| 51 | E 21 B | 1 / 00 |
| 52 | E 21 B | 19 / 00 |
| 52 | E 21 B | 19 / 14 |
| 53 | E 21 D | 1 / 06 |
| 53 | E 21 D | 3 / 00 |
| 54 | E 21 B | 7 / 16 |
| 54 | E 21 B | 7 / 18 |
| 55 - 56 | E 21 B | 7 / 24 |
| 56 | E 21 B | 7 / 04 |
| 57 | E 21 B | 7 / 00 |
| 58 - 60 | E 21 B | 49 / 00 |
| 61 | E 21 B | 7 / 04 |
| 62 | E 02 D | 29 / 00 |
| 64 - 66 | C 09 K | 8 / 02 |
| 64 | E 21 B | 7 / 00 |
| 65 | E 21 B | 21 / 00 |
| 66 | E 21 B | 21 / 06 |
| 67 | E 21 B | 7 / 18 |
| 67 | E 21 B | 43 / 114 |
| 68 | C 09 K | 8 / 38 |
| 68 | E 21 B | 21 / 16 |
| 69 - 72 | C 09 K | 8 / 02 |
| 69 | E 21 B | 21 / 14 |
| 70 | E 21 B | 21 / 00 |
| 71 | E 21 B | 21 / 16 |
| 72 | E 21 B | 7 / 00 |
| 72 | E 21 B | 7 / 18 |
| 73 | E 21 B | 7 / 04 |
| 73 - 75 | E 21 B | 7 / 08 |
| 73 | E 21 B | 15 / 04 |
| 74 | E 21 B | 7 / 10 |
| 76 | E 21 B | 7 / 00 |
| 76 | E 21 B | 17 / 10 |
| 77 - 83 | E 21 B | 7 / 04 |
| 77 - 83 | E 21 B | 7 / 08 |
| 77 | E 21 B | 15 / 04 |
| 77 - 78 | E 21 B | 49 / 02 |
| 84 | E 21 B | 41 / 00 |
| 85 | E 21 B | 19 / 00 |
| 85 | E 21 B | 19 / 20 |
| 86 | E 21 B | 41 / 00 |
| 86 | E 21 D | 1 / 06 |
| 87 | E 21 B | 25 / 00 |
| 88 | E 21 B | 41 / 00 |
| 89 | E 21 B | 11 / 06 |
| 90 - 91 | E 21 B | 10 / 00 |
| 91 | E 21 B | 11 / 00 |
| 92 - 107 | E 21 B | 4 / 00 |
| 101 - 103 | E 21 B | 19 / 22 |
| 108 | E 21 B | 7 / 00 |
| 113 - 122 | E 21 B | 3 / 02 |
| 122 | E 21 B | 1 / 02 |
| 135 | E 21 B | 1 / 00 |
| 161 | E 21 B | 27 / 00 |
| 162 | E 21 B | 19 / 08 |
| 170 - 173 | E 21 B | 1 / 02 |
| 170 - 189 | E 21 B | 3 / 00 |
| 170 - 173 | E 21 B | 7 / 20 |
| 189 | E 21 B | 1 / 00 |
| 189 | E 21 B | 6 / 00 |
| 195 | E 21 B | 3 / 04 |
| 195 | E 21 B | 3 / 06 |
| 202 | E 21 B | 23 / 00 |
| 203 | E 21 B | 3 / 06 |
| 203 | E 21 B | 19 / 08 |
| 205 | C 09 K | 8 / 02 |
| 205 | E 21 B | 21 / 12 |
| 206 - 207 | E 21 B | 21 / 00 |
| 206 - 207 | E 21 B | 21 / 06 |
| 208 | E 21 B | 1 / 00 |
| 209 - 218 | E 21 B | 17 / 18 |
| 209 - 218 | E 21 B | 21 / 00 |
| 219 | E 21 B | 41 / 00 |
| 220 | E 21 B | 15 / 00 |
| 226 | E 21 B | 25 / 08 |
| 226 | E 21 B | 49 / 02 |
| 227 - 229 | E 21 B | 10 / 24 |
| 230 | E 21 B | 17 / 10 |
| 231 | E 21 B | 7 / 08 |
| 231 | E 21 B | 10 / 00 |
| 232 - 255 | E 21 B | 25 / 00 |
| 232 - 243 | E 21 B | 27 / 00 |
| 244 - 255 | E 21 B | 10 / 02 |
| 244 - 255 | E 21 B | 49 / 02 |
| 256 | E 21 B | 7 / 08 |
| 257 - 262 | E 21 B | 10 / 64 |
| 257 | E 21 B | 11 / 00 |
| 258 - 261 | E 21 B | 10 / 66 |
| 262 | E 21 B | 11 / 00 |
| 263 - 292 | E 21 B | 7 / 28 |
| 263 - 292 | E 21 B | 10 / 32 |
| 263 - 292 | E 21 B | 10 / 34 |
| 293 - 295 | E 21 B | 4 / 00 |
| 293 - 306 | E 21 B | 10 / 38 |
| 296 - 297 | E 21 B | 4 / 14 |
| 298 | E 21 B | 4 / 10 |
| 299 - 306 | E 21 B | 4 / 00 |
| 307 | E 21 B | 10 / 00 |
| 307 | E 21 B | 12 / 04 |
| 308 - 312 | E 21 B | 27 / 00 |
| 308 - 312 | E 21 B | 31 / 00 |
| 313 | E 21 B | 10 / 00 |
| 313 | E 21 B | 12 / 06 |
| 314 | E 21 B | 43 / 34 |
| 315 | B 23 B | 51 / 04 |
| 315 | E 21 B | 12 / 00 |
| 316 | E 21 B | 11 / 00 |
| 317 - 318 | E 21 B | 41 / 00 |
| 319 | E 21 B | 4 / 00 |
| 320 - 324 | E 21 B | 17 / 00 |
| 320 - 322 | E 21 B | 19 / 00 |
| 320 - 322 | E 21 B | 21 / 00 |
| 323 | E 21 B | 10 / 44 |
| 323 | E 21 B | 17 / 22 |
| 324 | E 21 B | 19 / 00 |
| 324 | E 21 B | 21 / 00 |
| 325.1 - 326 | E 21 B | 17 / 10 |
| 327 - 333 | E 21 B | 10 / 00 |
| 327 - 328 | E 21 C | 25 / 04 |
| 331 | E 21 B | 10 / 08 |
| 332 | E 21 B | 10 / 06 |
| 333 | E 21 B | 10 / 04 |
| 333 | E 21 B | 25 / 00 |
| 334 - 335 | E 21 B | 10 / 28 |
| 336 - 343 | E 21 B | 10 / 00 |
| 344 - 347 | E 21 B | 10 / 30 |
| 348 - 379 | E 21 B | 10 / 00 |
| 380 | E 21 B | 7 / 16 |
| 381 - 384 | E 21 B | 10 / 00 |
| 385 - 386 | E 21 B | 10 / 26 |
| 387 | E 21 B | 10 / 00 |
| 388 - 392 | E 21 B | 10 / 40 |
| 393 | E 21 B | 10 / 60 |
| 393 | E 21 B | 17 / 00 |
| 393 | E 21 B | 19 / 00 |
| 393 | E 21 B | 21 / 00 |
| 394 - 395 | E 21 B | 10 / 44 |
| 395 | E 21 B | 10 / 36 |
| 396 | A 01 C | 5 / 02 |
| 397 | E 21 B | 10 / 42 |
| 398 - 401 | E 21 B | 10 / 00 |
| 402 | E 21 B | 17 / 14 |
| 403 - 405.1 | E 21 B | 10 / 00 |
| 406 - 407 | E 21 B | 10 / 26 |
| 408 | E 21 B | 17 / 10 |
| 412 - 413 | E 21 B | 10 / 00 |
| 414 - 420.2 | E 21 B | 10 / 36 |
| 421 | E 21 B | 10 / 42 |
| 423 | E 21 B | 19 / 10 |
| 424 | E 21 B | 7 / 18 |
| 424 | E 21 B | 41 / 00 |
| 424 | E 21 B | 43 / 114 |
| 425 - 435 | E 21 B | 10 / 36 |