Hierarchy/Derived subclasses
| 977 / 840 | -> 841 | |||
| -> 842 | -> 843 | |||
| -> 844 | ||||
| -> 845 | ||||
| -> 846 | ||||
| -> 847 | ||||
| -> 848 | ||||
| -> 849 | -> 850 | -> 851 | ||
| -> 852 | -> 853 | |||
| -> 854 | ||||
| -> 855 | -> 856 | |||
| -> 857 | ||||
| -> 858 | ||||
| -> 859 | ||||
| -> 860 | -> 861 | |||
| -> 862 | ||||
| -> 863 | ||||
| -> 864 | ||||
| -> 865 | ||||
| -> 866 | ||||
| -> 867 | ||||
| -> 868 | -> 869 | |||
| -> 870 | ||||
| -> 871 | ||||
| -> 872 | ||||
| -> 873 | ||||
| -> 874 | ||||
| -> 875 | -> 876 | |||
| -> 877 | ||||
| -> 878 | ||||
| -> 879 | ||||
| -> 880 | -> 881 | |||
| -> 882 | -> 883 | |||
| -> 884 | -> 885 | |||
| -> 886 | ||||
| -> 887 | ||||
| -> 888 | -> 889 | |||
| -> 890 | -> 891 | |||
| -> 892 | ||||
| -> 893 | -> molding | |||
| -> 894 | ||||
| -> 895 | -> 896 | -> 897 | ||
| -> 898 | ||||
| -> 899 | ||||
| -> 900 | ||||
| -> 901 |
uspto searches
Patent Apps in 977/840Granted Patents in 977/840
Use the links above or do an advanced search in ppubs for:
(977/840.ccls. or 977/841.ccls. or 977/842.ccls. or 977/843.ccls. or 977/844.ccls. or 977/845.ccls. or 977/846.ccls. or 977/847.ccls. or 977/848.ccls. or 977/849.ccls. or 977/850.ccls. or 977/851.ccls. or 977/852.ccls. or 977/853.ccls. or 977/854.ccls. or 977/855.ccls. or 977/856.ccls. or 977/857.ccls. or 977/858.ccls. or 977/859.ccls. or 977/860.ccls. or 977/861.ccls. or 977/862.ccls. or 977/863.ccls. or 977/864.ccls. or 977/865.ccls. or 977/866.ccls. or 977/867.ccls. or 977/868.ccls. or 977/869.ccls. or 977/870.ccls. or 977/871.ccls. or 977/872.ccls. or 977/873.ccls. or 977/874.ccls. or 977/875.ccls. or 977/876.ccls. or 977/877.ccls. or 977/878.ccls. or 977/879.ccls. or 977/880.ccls. or 977/881.ccls. or 977/882.ccls. or 977/883.ccls. or 977/884.ccls. or 977/885.ccls. or 977/886.ccls. or 977/887.ccls. or 977/888.ccls. or 977/889.ccls. or 977/890.ccls. or 977/891.ccls. or 977/892.ccls. or 977/893.ccls. or 977/molding.ccls. or 977/894.ccls. or 977/895.ccls. or 977/896.ccls. or 977/897.ccls. or 977/898.ccls. or 977/899.ccls. or 977/900.ccls. or 977/901.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.