TW489684U - A composite die combining tungstem carbide and tool steel for forming the drilling section of the self-drilling screw - Google Patents

A composite die combining tungstem carbide and tool steel for forming the drilling section of the self-drilling screw

Info

Publication number
TW489684U
TW489684U TW90202658U TW90202658U TW489684U TW 489684 U TW489684 U TW 489684U TW 90202658 U TW90202658 U TW 90202658U TW 90202658 U TW90202658 U TW 90202658U TW 489684 U TW489684 U TW 489684U
Authority
TW
Taiwan
Prior art keywords
drilling
tungstem
carbide
self
forming
Prior art date
Application number
TW90202658U
Other languages
Chinese (zh)
Inventor
Ching-Hung Chen
Original Assignee
Ching-Hung Chen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ching-Hung Chen filed Critical Ching-Hung Chen
Priority to TW90202658U priority Critical patent/TW489684U/en
Publication of TW489684U publication Critical patent/TW489684U/en

Links

TW90202658U 2001-02-20 2001-02-20 A composite die combining tungstem carbide and tool steel for forming the drilling section of the self-drilling screw TW489684U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW90202658U TW489684U (en) 2001-02-20 2001-02-20 A composite die combining tungstem carbide and tool steel for forming the drilling section of the self-drilling screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW90202658U TW489684U (en) 2001-02-20 2001-02-20 A composite die combining tungstem carbide and tool steel for forming the drilling section of the self-drilling screw

Publications (1)

Publication Number Publication Date
TW489684U true TW489684U (en) 2002-06-01

Family

ID=21681479

Family Applications (1)

Application Number Title Priority Date Filing Date
TW90202658U TW489684U (en) 2001-02-20 2001-02-20 A composite die combining tungstem carbide and tool steel for forming the drilling section of the self-drilling screw

Country Status (1)

Country Link
TW (1) TW489684U (en)

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Legal Events

Date Code Title Description
GD4K Issue of patent certificate for granted utility model filed before june 30, 2004
MM4K Annulment or lapse of a utility model due to non-payment of fees