Hierarchy/Derived subclasses
| 70 / 431 | -> 432 | -> 433 | -> 434 |
| -> 435 | |||
| -> 436 | -> 437 | ||
| -> 438 | |||
| -> 439 | -> 440 | ||
| -> 441 | |||
| -> 442 | -> 443 | ||
| -> 444 | |||
| -> 445 | |||
| -> 446 | |||
| -> 447 | -> 448 | -> 449 | |
| -> 450 | |||
| -> 451 | |||
| -> 452 | |||
| -> 453 | |||
| -> 454 | |||
| -> 455 | |||
| -> 456r | -> 457 | ||
| -> 458 | |||
| -> 459 | |||
| -> 456b | |||
| -> 460 | |||
| -> 461 | |||
| -> 462 | |||
| -> 463 | |||
| -> 464 | |||
| -> 465 | |||
| -> 466 |
uspto searches
Patent Apps in 70/431Granted Patents in 70/431
Use the links above or do an advanced search in ppubs for:
(70/431.ccls. or 70/432.ccls. or 70/433.ccls. or 70/434.ccls. or 70/435.ccls. or 70/436.ccls. or 70/437.ccls. or 70/438.ccls. or 70/439.ccls. or 70/440.ccls. or 70/441.ccls. or 70/442.ccls. or 70/443.ccls. or 70/444.ccls. or 70/445.ccls. or 70/446.ccls. or 70/447.ccls. or 70/448.ccls. or 70/449.ccls. or 70/450.ccls. or 70/451.ccls. or 70/452.ccls. or 70/453.ccls. or 70/454.ccls. or 70/455.ccls. or 70/456r.ccls. or 70/457.ccls. or 70/458.ccls. or 70/459.ccls. or 70/456b.ccls. or 70/460.ccls. or 70/461.ccls. or 70/462.ccls. or 70/463.ccls. or 70/464.ccls. or 70/465.ccls. or 70/466.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.