Hierarchy/Derived subclasses
| D19 / 65 | -> 66 | -> 67 | -> 8 | -> 68 | ||
| -> 69 | ||||||
| -> 70 | -> 9 | -> 71 | ||||
| -> 72 | -> 10 | -> 73 | -> 74 | |||
| -> 75 | -> 11 | -> 76 | ||||
| -> 77 | -> 78 | |||||
| -> 79 | -> 80 | |||||
| -> 81 | -> 82 | |||||
| -> 83 | ||||||
| -> 84 | -> 85 | |||||
| -> 86 | -> 12 | -> 87 | ||||
| -> 88 | -> 13 | |||||
| -> 89 | ||||||
| -> 90 | -> 91 | |||||
| -> 92 | ||||||
| -> 93 | -> 14 | -> 94 | ||||
| -> 95 | -> 15 | -> 96 | -> 97 | |||
| -> 98 | ||||||
| -> 99 | -> 16 |
uspto searches
Patent Apps in D19/65Granted Patents in D19/65
Use the links above or do an advanced search in ppubs for:
(D19/65.ccls. or D19/66.ccls. or D19/67.ccls. or D19/8.ccls. or D19/68.ccls. or D19/69.ccls. or D19/70.ccls. or D19/9.ccls. or D19/71.ccls. or D19/72.ccls. or D19/10.ccls. or D19/73.ccls. or D19/74.ccls. or D19/75.ccls. or D19/11.ccls. or D19/76.ccls. or D19/77.ccls. or D19/78.ccls. or D19/79.ccls. or D19/80.ccls. or D19/81.ccls. or D19/82.ccls. or D19/83.ccls. or D19/84.ccls. or D19/85.ccls. or D19/86.ccls. or D19/12.ccls. or D19/87.ccls. or D19/88.ccls. or D19/13.ccls. or D19/89.ccls. or D19/90.ccls. or D19/91.ccls. or D19/92.ccls. or D19/93.ccls. or D19/14.ccls. or D19/94.ccls. or D19/95.ccls. or D19/15.ccls. or D19/96.ccls. or D19/97.ccls. or D19/98.ccls. or D19/99.ccls. or D19/16.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.