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Publication number
CA947138A1
CA947138A1 CA 947138 A1 CA947138 A1 CA 947138A1
Authority
CA
Grant status
Grant
Patent type
Application number

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Also Published As

Publication number Publication date Type
DE2227295A1 (xx) 1972-12-21 application
DE2227295B2 (xx) 1975-11-20 application
US3727547A (en) 1973-04-17 grant
GB1320297A (en) 1973-06-13 application
CA947138A (en) 1974-05-14 grant