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InterDigital Inc is a research and development company focused on wireless, video, Artificial Intelligence and related technologies. It designs and develops technologies that enable connected, immersive experiences in a broad range of communications and entertainment products and services. The majority of revenue is generated from fixed-fee patent license agreements, with a smaller portion coming from variable royalty agreements. Geographically it operates in the United States, China, South Korea, Japan, Taiwan, and Europe, Out of which the majority is from the China.
Select Medical Holdings Corp is a healthcare company that operates through four main segments: critical illness recovery hospitals, rehabilitation hospitals, outpatient rehabilitation clinics, and Concentra institutions. Critical illness recovery hospitals and rehabilitation centres are designed for patients requiring extended recovery time with medical services. These two sectors combined compose roughly half of the total revenue and include over 103 critical illness recovery hospitals and inpatient rehab facilities. The outpatient rehabilitation segment includes over 1,928 rehabilitation clinics. The Concentra segment includes over 540 occupational health centers and 147 onsite clinics. The company is headquartered in Pennsylvania, and it operates across the United States.