FIELD: locksmiths' work, concerns the method for installation of device or means for closing the keyhole. SUBSTANCE: the method consists in attachment of the device or means to the bearing surface; the device or means for closing the keyhole is used in the process of door closing; and the door frame surface is used as the bearing surface. EFFECT: enhanced resistance of the door to burglary. 1 dwg
Title | Year | Author | Number |
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RU2163289C1 |
Authors
Dates
2001-05-10—Published
2000-08-08—Filed