Patents

Search tools Text Classification Chemistry Measure Numbers Full documents Title Abstract Claims All Any Exact Not Add AND condition These CPCs and their children These exact CPCs Add AND condition
Exact Exact Batch Similar Substructure Substructure (SMARTS) Full documents Claims only Add AND condition
Add AND condition
Application Numbers Publication Numbers Either Add AND condition

Classifications

F16K1/2014 Shaping of the valve member
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CS154342B2

Czechoslovakia


Worldwide applications
1971 SE GB 1972 US FR BE SU CS IT JP

Application CS70972*#A events
1972-02-04
Application filed