F02F1/4221 - CPC Classification Index

ClassID:

140051 ⎘

F02F1/4221 - CPC Classification

Classification description:

Cylinders; Cylinder heads ; Cylinder heads; Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder particularly for three or more inlet valves

Recent Application in this class:

20240133350

2024-04-25

Internal Combustion Engine with Spark Plug and Prechamber Spark Plug

20180010486

2018-01-11

Control device for internal combustion engine

20070181098

2007-08-09

INTERNAL COMBUSTION ENGINE WITH THREE VALVES PER CYLINDER

20070181093

2007-08-09

Internal combustion engine with five valves per cylinder