<SEC-DOCUMENT>0001144204-18-018244-index.html : 20180330
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<ACCEPTANCE-DATETIME>20180330150523
ACCESSION NUMBER:		0001144204-18-018244
CONFORMED SUBMISSION TYPE:	10-K
PUBLIC DOCUMENT COUNT:		36
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180330
DATE AS OF CHANGE:		20180330

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RIDGEFIELD ACQUISITION CORP
		CENTRAL INDEX KEY:			0000812152
		STANDARD INDUSTRIAL CLASSIFICATION:	BLANK CHECKS [6770]
		IRS NUMBER:				840922701
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-16335
		FILM NUMBER:		18725912

	BUSINESS ADDRESS:	
		STREET 1:		31248 OAK CREST DRIVE
		STREET 2:		SUITE 110
		CITY:			WESTLAKE VILLAGE
		STATE:			CA
		ZIP:			91361
		BUSINESS PHONE:		3033680401

	MAIL ADDRESS:	
		STREET 1:		31248 OAK CREST DRIVE
		STREET 2:		SUITE 110
		CITY:			WESTLAKE VILLAGE
		STATE:			CA
		ZIP:			91361

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BIO MEDICAL AUTOMATION INC
		DATE OF NAME CHANGE:	19990323

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OZO DIVERSIFIED AUTOMATION INC /CO/
		DATE OF NAME CHANGE:	19920703
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