List of top research & development companies in Patna

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Agriculture
Mining & Quarrying
Manufacturing of Food Products
Manufacturing of Tobacco Products
Manufacturing of Textiles
Manufacturing of Wearing Apparel
Manufacturing of Leather Products
Manufacturing of Wood Products
Manufacturing of Paper Products
Manufacturing of Chemical Products
Manufacturing of Machinery
Manufacturing of Motor Vehicles
General Manufacturing
Electricity, Gas & Water
Construction
Trading
Hotels & Restaurants
Transport and Storage
Transport Services
Post and Telecommunications
Finance
Insurance
Real Estate and Renting
Computer Related Services
Research & Development
Business Services
Community and Social Services
Education
Health and Social Work
Recreational, Cultural and Sporting Activites