DIFF Subgroup
G04F 1/08 by a body falling a prefixed distance in air or in a viscous material
Introduced: September 1968
Full Title
Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers > by movement or acceleration due to gravity > by a body falling a prefixed distance in air or in a viscous material
No child classifications to compare. This is a leaf node in both IPC and CPC.