Patent classifications
E
FIXED CONSTRUCTIONS
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E05
LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
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E05C
BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
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9/00
Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
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E05C9/06
with three or more sliding bars
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E05C9/063
extending along three or more sides of the wing or frame
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