Patent details

EN | LT

LT - Gręžinio ekranas horizontaliam arba mažo nuolydžio gręžiniui

EN - WELL SCREEN HAVING A PROTECTIVE FRAME FOR A HORIZONTAL OR HIGH-ANGLE WELL

Legal status

Patent lapsed (non-payment of fees)

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Patent application specification | Search report | Patent specification (0.43 Mb)

Bibliographic data

Indications of the International Patent Classification (IPC)
(51)	INT.CL.: (2006.01)	E21B 43/02

Patent
(11)	Number of the document	3336
(13)	Kind of document	B
(21)	Application number	IP467
(22)	Date of filing the application	1993-04-01
(41)	Date of publication of the application	1994-10-25
(45)	Date of publication of patent	1995-07-25

Applicant
(71)	NAGAOKA INTERNATIONAL CORPORATION, 2-2-91, Mokuzaidori, Mihara-machi, Minami Kawachi-gun, Osaka-fu, JP

Inventors
(72)	Tadayoshi NAGAOKA, JP

Grantee
(73)	NAGAOKA INTERNATIONAL CORPORATION, 2-2-91, Mokuzaidori, Mihara-machi, Minami Kawachi-gun, Osaka-fu, JP

Attorney or representative
(74)	Rita LAURINAVIČIŪTĖ, Gedimino pr. 45-6, LT-01109 Vilnius, LT

Title
(54)	WELL SCREEN HAVING A PROTECTIVE FRAME FOR A HORIZONTAL OR HIGH-ANGLE WELL

Last renewal fee
	Payment date	Validity (years)	Amount
	1996-03-26	4	80.00 USD

Legal status
	Patent lapsed (non-payment of fees)
	Invalidation date	1997-04-01