{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8515022","patent":{"patent_number":"US-8515022","title":"Speakerphone and extension speakerphone for use in personal emergency response system","assignee":null,"inventors":[],"filing_date":"2009-06-01T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["H04M","H04M","H04M"],"num_claims":16,"abstract":"A personal emergency response system (PERS) includes a base unit (16) and one or more extension units (20). The base unit includes a speaker (64), a microphone (72), a telephone interface circuit (40), a microcontroller (46), and an autodialer (48). Each extension unit includes a speaker (164), a microphone (172), a telephone interface circuit (140), and a controller (146) without an autodialer. The base unit controller (46) and the extension unit controller (146) are programmed such that in a help mode, the base unit controller and the extension unit controller assume a master/slave relationship."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Speakerphone and extension speakerphone for use in personal emergency response system","description":"A personal emergency response system (PERS) includes a base unit (16) and one or more extension units (20). The base unit includes a speaker (64), a microphone (72), a telephone interface circuit (40)","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8515022","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8515022","citation_suggestion":"Patentable. \"Speakerphone and extension speakerphone for use in personal emergency response system\" (US-8515022). https://patentable.app/patents/US-8515022","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8515022","json":"https://patentable.app/api/llm-context/US-8515022","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T14:10:07.258Z"}