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PCE
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DIFF Subgroup
G04B 15/04

Cylinder escapements

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Escapements > permanently in contact with the regulating mechanism > Cylinder escapements

CPC:

Escapements ( electric or magnetic means for converting oscillatory to rotary motion in electromechanical time-pieces ) > permanently in contact with the regulating mechanism > Cylinder escapements

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