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Priority to BE674016ApriorityCriticalpatent/BE674016A/fr
Publication of BE674016ApublicationCriticalpatent/BE674016A/fr
H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech
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Engineering & Computer Science
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Signal Processing
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Developing Agents For Electrophotography
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Pharmaceuticals Containing Other Organic And Inorganic Compounds
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Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
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