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Publication number
CA1171985A1
CA1171985A1 CA 1171985 A1 CA1171985 A1 CA 1171985A1
Authority
CA
Grant status
Grant
Patent type
Application number

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Also Published As

Publication number Publication date Type
JPS56157165A (en) 1981-12-04 application
EP0037573A1 (en) 1981-10-14 application
US4371751A (en) 1983-02-01 grant
EP0037573B1 (en) 1985-12-04 grant
CA1171985A (en) 1984-07-31 grant
DE3173091D1 (en) 1986-01-16 grant