using vacuum tubes (using diode rectifiers H03K19/12)

Introduced: September 1968

Title

Titles differ between systems:

IPC: using vacuum tubes

CPC: using vacuum tubes (using diode rectifiers H03K19/12)

Full Title

Full titles differ between systems:

IPC:

Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits > using specified components > using vacuum tubes

CPC:

Logic circuits, i.e. having at least two inputs acting on one output (circuits for computer systems using fuzzy logic G06N7/02); Inverting circuits > using specified components (, H03K19/003 - H03K19/0175 take precedence) > using vacuum tubes (using diode rectifiers H03K19/12)

No child classifications to compare. This is a leaf node in both IPC and CPC.