Spiral-webbed mandrel

United States of America Patent

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Sep 15, 2009
Grant Date
Oct 19, 2006
app pub date
Jun 13, 2006
filing date
Feb 13, 2002

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Abstract

An mandrel for extrusion of hollow bodies, such as, polyvinyl chloride (PVC) hard, compact, and foamed pipes, includes an inner collar and an outer collar, and webs radially joining the inner collar and outer collar. The webs can be arranged twisted and/or offset in radial direction.

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Patent Owner(s)

Patent Owner	Address
AMERICAN MAPLAN CORPORATION	P O BOX 832 823 S BYPASS MCPHERSON KS 67460

International Classification(s)

B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dohmann, Heinrich	Hoexter , DE	17	15
Witt, Reinhard	Bad Oeynhausen , DE	7	69

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Spiral-webbed mandrel

Number of patents in Portfolio can not be more than 2000

United States of America Patent

11451677

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PATENT NO	7588708
APP PUB NO	20060231973A1
SERIAL NO	11451677
DOCKET NO

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
September 15, 2009	US,7588708,B2 US7588708B2	GRANTED PATENT AS SECOND PUBLICATION
October 19, 2006	US,20060231973,A1 US20060231973A1	FIRST PUBLISHED PATENT APPLICATION

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11451677

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