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Expired
Application number
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Etienne Joseph Gislai Botteman
Ernest Albert Jean Fages
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Individual
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Individual
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Publication of GB190709781ApublicationCriticalpatent/GB190709781A/en
9781. Botteman, E. J. G., and Fages, E. A. J. Oct. 24, 1906, [date applied for under Patents Act, 1901]. Door-opening apparatus.-In the staple 50 of a concealed door fastening, electrically or pneumatically operated from a distance, a spring 22 is mounted, and, bearing on a lever arm 18, causes the door to open slightly when the latch 23 is withdrawn.
GB190709781D1906-10-241907-04-26Improvements in Locks Operated from a Distance.
ExpiredGB190709781A
(en)