Method and apparatus for producing end flange member for cylindrical duct

United States of America Patent

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Nov 11, 2003
Grant Date
Feb 6, 2003
app pub date
Aug 2, 2001
filing date
Aug 2, 2001

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Expired

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Abstract

A method for producing a cylindrical flange for the end of an air duct is produced by compressing a panel by differing amounts to cause the panel to take on an arcuate cylindrical shape.

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Patent Owner(s)

Patent Owner	Address
ISSAGHOLIAN-HAVAI ROBERT	Not Provided

International Classification(s)

B21K:MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOE....

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Inventor Name	Address	# of filed Patents	Total Citations
Issagholian-Havai, Robert	5119 Azusa Canyon Rd., Baldwin Park, CA 91706	9	61

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Method and apparatus for producing end flange member for cylindrical duct

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09920906

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PATENT NO	6643930
APP PUB NO	20030025332A1
SERIAL NO	09920906
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
November 11, 2003	US,6643930,B2 US6643930B2	GRANTED PATENT AS SECOND PUBLICATION
February 06, 2003	US,20030025332,A1 US20030025332A1	FIRST PUBLISHED PATENT APPLICATION

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09920906

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