F04C21/00 - CPC Classification Index

ClassID:

143637 ⎘

F04C21/00 - CPC Classification

Classification description:

Oscillating-piston pumps specially adapted for elastic fluids

Sub-classes:

F04C21/002 » {the piston oscillating around a fixed axis} 18
F04C21/005 » {the piston oscillating in the space, e.g. around a fixed point } 7
F04C21/007 » {the points of the moving element describing approximately an alternating movement in axial direction with respect to the other element} 7

Recent Application in this class:

20210018421

Miniature optical particulate matter sensor module

20200166036

Method and device for expanding a gas with a reciprocating-piston machine

20190178775

Miniature optical particulate matter sensor module

20190145413

Gas ejection apparatus

20170284396

ELECTRIC COMPRESSOR

20170284395

ELECTRIC COMPRESSOR

20130236343

Compressor with low friction sealing