Dual offset derrick

United States of America Patent

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Feb 26, 2013
Grant Date
Dec 15, 2011
app pub date
Jun 15, 2011
filing date
Jun 15, 2010

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Abstract

An oil derrick comprising a derrick tower, where the derrick tower is asymmetrical about its z axis in both x and y directions. The dual offset derrick tower structure allows for a unique drill floor arrangement.

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Patent Owner	Address
WOOLSLAYER COMPANIES INC	SUITE 350 5416 SOUTH YALE TULSA OK 74135

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E04H:BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOS....

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Inventor Name	Address	# of filed Patents	Total Citations
Gress, Jason P	Tulsa, US	1	7
Vogt, Dewayne G	Tulsa, US	10	200

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Dual offset derrick

Number of patents in Portfolio can not be more than 2000

United States of America Patent

13160940

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PATENT NO	8381480
APP PUB NO	20110302869A1
SERIAL NO	13160940
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 26, 2013	US,8381480,B2 US8381480B2	GRANTED PATENT AS SECOND PUBLICATION
December 15, 2011	US,20110302869,A1 US20110302869A1	FIRST PUBLISHED PATENT APPLICATION

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13160940

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