Drill tool for deep wells

United States of America Patent

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Jul 17, 1984
Grant Date
N/A
app pub date
Aug 14, 1981
filing date
Aug 14, 1981

priority date (Note)
Expired

status (Latency Note)

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Abstract

A rotary bit for oil and gas well drilling has cutting elements set in a hard facing material which in turn is supported by a sintered steel section between the hard facing and the steel base of the bit.

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Patent Owner(s)

Patent Owner	Address
EASTMAN CHRISTENSEN COMPANY	3900 ESSEX LANE HOUSTON TX 77027

International Classification(s)

E21B:EARTH OR ROCK DRILLING

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Jurgens, Rainer	Altencelle, DE	30	1215
Rathkamp, Hermann	Celle, DE	2	220

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Drill tool for deep wells

Number of patents in Portfolio can not be more than 2000

United States of America Patent

06292778

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PATENT NO	4460053
SERIAL NO	06292778
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06292778

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Abstract

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