Differential Resonator
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In 1912, he obtained a patent for a differential resonator that was suitable for teachers of music or physics. This example is inscribed \u00e2\u0080\u009cManufactured by Consolidated Optical Co., Ltd. Toronto.\u00e2\u0080\u009d"}, {"label": "Description", "content": "Ref: Edward H. Murfee, \u00e2\u0080\u009cDifferential Resonator,\u00e2\u0080\u009d U.S. Patent 1,044,227 (Nov. 2, 1912)."}, {"label": "Location", "content": "Currently not on view"}], "creditLine": [{"label": "Credit Line", "content": "United States Military Academy"}], "place": [{"label": "place made", "content": "Canada: Ontarian, Toronto"}], "physicalDescription": [{"label": "Measurements", "content": "overall: 2 15/16 in x 18 5/8 in x 4 in; 7.46125 cm x 47.3075 cm x 10.16 cm"}], "dataSource": [{"label": "Data Source", "content": "National Museum of American History"}], "objectType": [{"label": "Object Name", "content": "resonator"}]}}, "url": "edanmdm:nmah_1817159", "hash": "af6dd348bd557f0142cf67ad4b1a4577b68d2e1a", "docSignature": "ba756b412b31d4656c26376756424c09", "timestamp": 1663336903, "lastTimeUpdated": 1653680696, "title": "Differential Resonator"}