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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19/00
Other devices specially designed for securing wings,; e.g. with suction cups
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E05C19/18
Portable devices specially adapted for securing wings
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