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Henri Hubert Mahieu
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Publication of GB191414739ApublicationCriticalpatent/GB191414739A/en
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
H04R1/00—Details of transducers, loudspeakers or microphones
H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection
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Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
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Signal Processing
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Closures For Containers
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Abstract
14,739. Mahieu, H. H. June 19. Sanitary and hygienic devices.-A disinfecting- attachment for a mouthpiece comprises two rings b, m screwed together so as to grip the periphery of the mouthpiece, and a hinged lid d bearing a container g<1> for disks g of felt or the like soaked in disinfectant. The lid, when shut, is fastened by a flange b<1>. The lid may be used for advertising purposes.
GB191414739D1914-06-191914-06-19An Apparatus for Disinfecting the Mouth-pieces of Telephone Transmitters.
ExpiredGB191414739A
(en)