DD60710A - - Google Patents

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Publication number
DD60710A
DD60710A DD60710DA DD60710A DD 60710 A DD60710 A DD 60710A DD 60710D A DD60710D A DD 60710DA DD 60710 A DD60710 A DD 60710A
Authority
DD
German Democratic Republic
Application number
Publication of DD60710A publication Critical patent/DD60710A/xx

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DD60710D DD60710A (en)

Publications (1)

Publication Number Publication Date
DD60710A true DD60710A (en)

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ID=254813

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DD60710D DD60710A (en)

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DD (1) DD60710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938995C1 (en) * 1989-11-22 1991-01-03 Klaus 2857 Langen De Kernchen Card-operated security system - has coded strips applied to both sides of card and no more than one aligned lamp sensor pair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938995C1 (en) * 1989-11-22 1991-01-03 Klaus 2857 Langen De Kernchen Card-operated security system - has coded strips applied to both sides of card and no more than one aligned lamp sensor pair

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