Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G11B 27/22

Means responsive to presence or absence of recorded information signals

Introduced: September 1968

Full Title

Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel > Indexing; Addressing; Timing or synchronising; Measuring tape travel > by using information detectable on the record carrier > Means responsive to presence or absence of recorded information signals

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