Membership
Tour
Register
Log in
Chang Feng-Sing
Follow
Person
Taipei, TW
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Method of manufacturing blades for scissors
Patent number
6,021,693
Issue date
Feb 8, 2000
Chang Feng-Sing
Chang Feng-Sing
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL