【発明の名称】中空ねじり材のねじり押出用ポートホールダイス

Title:

【発明の名称】中空ねじり材のねじり押出用ポートホールダイス

Document Type and Number:

Japanese Patent JPH0679739

Kind Code:

B2

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JPS6030261	[Title of the Invention] Double pipe extrusion molding apparatus
JPS58157521	METHOD AND APPARATUS FOR MANUFACTURING GEAR

Inventors:

KITANO MITSUHIRO
OOKUBO KUNIO
OONEDA NOBORU

Application Number:

JP3337989A

Publication Date:

October 12, 1994

Filing Date:

February 13, 1989

Export Citation:

Assignee:

SHOWA ALUMINIUM CO LTD

International Classes:

B21C23/10; B21C25/02; (IPC1-7): B21C25/02; B21C23/10

Domestic Patent References:

Attorney, Agent or Firm:

Hisayoshi Shimizu

Next Patent: 中空ねじり材のねじり押出用ホローダイス