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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3/00
Fastening devices with bolts moving pivotally or rotatively
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E05C3/16
with operating handle or equivalent member moving otherwise than rigidly with the latch
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E05C3/22
the bolt being spring controlled
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E05C3/24
in the form of a bifurcated member
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