Family

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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
MEDECO SECURITY LOCKS INC	INCORPORATED IN THE STATE OF VIRGINIA P O BOX 3075 SALEM VA

International Classification(s)

• E05B:LOCKS; ACCESSORIES THEREFOR; HANDCUFFS

• 1989 Application Filing Year
• E05B Class
• 258 Applications Filed
• 1 Patents Issued To-Date
• 0.39 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Field, Peter H	Salem, VA	29	492
# of filed Patents : 29 Total Citations : 492

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Patent Citation Ranking

• 34 Citation Count
• E05B Class

• 0 % this patent is cited more than
• 33 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 5088306

Cylinder lock with changeable keyway

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Abstract

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A cylinder lock is capable of providing a changeable keyway by means of elongated warding members which are insertable into a keyway access slot which has a cross-sectional configuration larger than for a desired key. There may be one or more warding members which are insertable into the plug and extend the length of the keyway access lot to define the cross-sectional area of a desired key.

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Description

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Claims

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Legal Events

 

• FPAY2003
• FPAY1999
• FPAY1995
• FEPP1994
• I1992
• STCF1992
• AS1989
• F1989
• PD1989

Date	Code	Event	Description
Aug 13, 2003	FPAY	FEE PAYMENT	year of fee payment: 12
Aug 04, 1999	FPAY	FEE PAYMENT	year of fee payment: 8
Aug 08, 1995	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 08, 1994	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Feb 18, 1992	I	Issuance
Feb 07, 1992	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Nov 30, 1989	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FIELD, PETER H.;REEL/FRAME:005206/0087 Owner name: MEDECO SECURITY LOCKS, INC., VIRGINIA Effective Date: Nov 30, 1989
Oct 31, 1989	F	Filing
Oct 31, 1989	PD	Priority Date