DIFF Subgroup
E05B 35/12 requiring the use of two keys, e.g. safe-deposit locks (locks with key-operated keyhole cover E05B17/142)
Introduced: September 1968
Title
Titles differ between systems:
IPC: requiring the use of two keys, e.g. safe-deposit locks
CPC: requiring the use of two keys, e.g. safe-deposit locks (locks with key-operated keyhole cover E05B17/142)
Full Title
Full titles differ between systems:
IPC:
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
CPC:
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)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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