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Key reading system
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Patent number 4,433,487
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Issue date Feb 28, 1984
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All-Lock Electronics, Inc.
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Manfred W. Roland
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Key code
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Patent number 4,432,142
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Issue date Feb 21, 1984
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All-Lock Electronics, Inc.
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Andrew J. Korsak
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Door control system
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Patent number 4,415,893
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Issue date Nov 15, 1983
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All-Lock Electronics, Inc.
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Manfred W. Roland
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES