A MODULAR BLACKBOARD-BASED EXPERT SYSTEM - Patent 0448641

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EP 0 448 641 A1

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(43)	Date of publication:
	02.10.1991 Bulletin 1991/40

(21)	Application number: 90901395.0

(22)	Date of filing: 11.12.1989

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International Patent Classification (IPC):

G06F 9/ 44^{( . )}

G06N 5/ 04^{( . )}

(86)	International application number:
	PCT/US1989/005622

(87)	International publication number:
	WO 1990/007152 (28.06.1990 Gazette 1990/15)

(84)	Designated Contracting States:
	DE FR GB

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Priority:

14.12.1988 US 19880284198

(71)	Applicant: DIGITAL EQUIPMENT CORPORATION
	Maynard, MA 01754 (US)

(72)	Inventor:
	SIMOUDIS, Evangelos Marlboro, MA 01752 (US)

(74)	Representative: Goodman, Christopher, et al
	Eric Potter & Clarkson St. Mary's Court St. Mary's Gate Nottingham NG1 1LE Nottingham NG1 1LE (GB)

(54)	A MODULAR BLACKBOARD-BASED EXPERT SYSTEM