Subclass Subgroup Patent
H03F 1/0216 12170505
  1/26 12170506
  1/52 12170507
  3/193 12170508
  3/45475 12170509
H03G 3/32 12170510
H03H 7/0115 12170511
  7/20 12170512
  9/13 12170513
  9/2457 12170514
  9/542 12170515
  9/568 12170516
  9/706 12170517
H03K 3/012 12170520
  5/2481 12170521
  17/6871 12170518
  19/0963 12170519
H03L 7/085 12170522
H03M 1/46 12170523
  1/468 12170524
  1/66 12170525
    12170526
  1/785 12170527
  7/3059 12170534
  13/1111 12170528
  13/1131 12170529
  13/13 12170530
  13/154 12170531
  13/2792 12170532
  13/2909 12170533