CPC Subgroup
E05B 35/12 requiring the use of two keys, e.g. safe-deposit locks (locks with key-operated keyhole cover E05B17/142)
Full Title
Locks for use with special keys or a plurality of keys > operable by a plurality of keys > requiring the use of two keys, e.g. safe-deposit locks (locks with key-operated keyhole cover E05B17/142)
1 direct subcode
Child Classifications
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