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Patent classifications
E
FIXED CONSTRUCTIONS
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E05
LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
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E05B
LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
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63/00
Locks; or fastenings; with special structural characteristics
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E05B63/04
for alternative use on the right-hand or left-hand side of wings
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E05B63/048
with bolt heads at both sides of the lock
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