{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8469047","patent":{"patent_number":"US-8469047","title":"System to control pressure in a test device","assignee":null,"inventors":[],"filing_date":"2011-05-26T00:00:00.000Z","publication_date":"2013-06-25T00:00:00.000Z","cpc_codes":["G05D","G05D"],"num_claims":20,"abstract":"Embodiments of the present invention are directed toward pressure controllers and calibrators for setting or measuring pressures in test devices. In one embodiment, the pressure controller contains a dual reference pressure controller. The dual reference pressure controller is operable to maintain two different pressures relative to a reference pressure. The first pressure being a relatively fixed amount greater than the reference pressure and the second pressure being a relatively fixed amount less than the reference pressure."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"System to control pressure in a test device","description":"Embodiments of the present invention are directed toward pressure controllers and calibrators for setting or measuring pressures in test devices. In one embodiment, the pressure controller contains a ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8469047","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-8469047","citation_suggestion":"Patentable. \"System to control pressure in a test device\" (US-8469047). https://patentable.app/patents/US-8469047","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8469047","json":"https://patentable.app/api/llm-context/US-8469047","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:16:43.922Z"}