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Arnold Ludwig Hoffmann
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Individual
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Publication of GB190821353ApublicationCriticalpatent/GB190821353A/en
Control Of Vending Devices And Auxiliary Devices For Vending Devices
(AREA)
Abstract
21,353. Hoffmann, A. L. Oct. 9. Keys; keyholes, obstructing. - The handle b of a door or other key a is hinged thereto, and can be turned down and secured to the lock casing or door &c.at the aperture e, thus preventing removal of the key from the outside.
GB190821353D1908-10-091908-10-09Improvements in and relating to Keys for Door and other Locks
ExpiredGB190821353A
(en)