Hierarchy/Derived subclasses
| 175 / 327 | -> 331 | -> 332 | -> 333 | |
| -> 334 | -> 335 | |||
| -> 336 | ||||
| -> 337 | ||||
| -> 338 | ||||
| -> 339 | -> 340 | |||
| -> 341 | ||||
| -> 342 | ||||
| -> 343 | ||||
| -> 344 | -> 345 | -> 346 | ||
| -> 347 | ||||
| -> 348 | -> 349 | |||
| -> 350 | -> 351 | -> 352 | ||
| -> 353 | ||||
| -> 354 | ||||
| -> 355 | -> 356 | |||
| -> 357 | ||||
| -> 358 | -> 359 | |||
| -> 360 | ||||
| -> 361 | -> 362 | |||
| -> 363 | ||||
| -> 364 | ||||
| -> 365 | ||||
| -> 366 | ||||
| -> 367 | -> 368 | |||
| -> 369 | -> 370 | |||
| -> 371 | -> 372 | |||
| -> 373 | ||||
| -> 374 | -> 375 | |||
| -> 376 | ||||
| -> 377 | ||||
| -> 378 |
uspto searches
Patent Apps in 175/331Granted Patents in 175/331
Use the links above or do an advanced search in ppubs for:
(175/331.ccls. or 175/332.ccls. or 175/333.ccls. or 175/334.ccls. or 175/335.ccls. or 175/336.ccls. or 175/337.ccls. or 175/338.ccls. or 175/339.ccls. or 175/340.ccls. or 175/341.ccls. or 175/342.ccls. or 175/343.ccls. or 175/344.ccls. or 175/345.ccls. or 175/346.ccls. or 175/347.ccls. or 175/348.ccls. or 175/349.ccls. or 175/350.ccls. or 175/351.ccls. or 175/352.ccls. or 175/353.ccls. or 175/354.ccls. or 175/355.ccls. or 175/356.ccls. or 175/357.ccls. or 175/358.ccls. or 175/359.ccls. or 175/360.ccls. or 175/361.ccls. or 175/362.ccls. or 175/363.ccls. or 175/364.ccls. or 175/365.ccls. or 175/366.ccls. or 175/367.ccls. or 175/368.ccls. or 175/369.ccls. or 175/370.ccls. or 175/371.ccls. or 175/372.ccls. or 175/373.ccls. or 175/374.ccls. or 175/375.ccls. or 175/376.ccls. or 175/377.ccls. or 175/378.ccls.)
At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.