73754382
Sep 23, 1988
Mar 27, 1990
CEOTRONICS GESELLSCHAFT MIT BESCHRANKTER HAFTUNG ELEKTRONISCHE HOR- UND SPRECHSSTEME
ELECTRONIC COMMUNICATION APPARATUS, PARTICULARLY FOR USE IN NOISY ENVIRONMENTS, NAMELY, APPARATUS FOR LISTENING OR FOR SPEAKING CONSISTING OF MICROPHONES AND EARPHONES OR HEADPHONES, INCLUDING APPARATUS FOR LISTENING OR FOR SPEAKING WHICH IS WORN UNDER PROTECTIVE HEADGEAR AND/OR PROTECTIVE CLOTHING SUCH AS BY PILOTS OR AIR TRAFFIC CONTROLLERS; LISTENING AND SPEAKING APPARATUS CONSISTING OF MICROPHONES AND EARPHONES OR HEADSETS WITH SPEECH BUTTONS AND/OR ELECTRONIC SPEECH CONTROLS FOR TRANSMISSION APPARATUS OR FOR WIRE-CONNECTED SPEECH APPARATUS
Electrical and Scientific ApparatusACOUSTIC HEARING PROTECTORS FOR MINIMIZING OR ELIMINATING OUTSIDE OR EXTRANEOUS NOISE OR SOUNDS
Medical Apparatus