Patent classifications
E
FIXED CONSTRUCTIONS
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E05
LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
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E05D
HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
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11/00
Additional features or accessories of hinges
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E05D11/08
Friction devices between relatively-movable hinge parts
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E05D11/082
with substantially radial friction, e.g. cylindrical friction surfaces
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E05D11/084
the friction depending on direction of rotation or opening angle of the hinge
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