Subclass | Subgroup | Patent |
H04R | 1/02 | 12170863 |
12170864 | ||
1/028 | 12170865 | |
1/086 | 12170866 | |
1/1041 | 12170867 | |
1/1075 | 12170868 | |
3/06 | 12170874 | |
3/12 | 12170875 | |
5/04 | 12170876 | |
9/047 | 12170877 | |
19/04 | 12170869 | |
25/505 | 12170870 | |
25/554 | 12170871 | |
27/00 | 12170872 | |
29/007 | 12170873 |