![Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)](http://www.ecns.cn/hd/2018/06/04/c94172de912e4c23b6669cbd34ee5a1d.jpg)
Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)
![Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)](http://www.ecns.cn/hd/2018/06/04/3d96d5e9f2104f65bc8f8a8e5759a047.jpg)
Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)
![Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)](http://www.ecns.cn/hd/2018/06/04/1a09dcca628b418ab4271c79d8daaa24.jpg)
Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)
![Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)](http://www.ecns.cn/hd/2018/06/04/0332f345ff5747308081da61a5eacb82.jpg)
Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)
![Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)](http://www.ecns.cn/hd/2018/06/04/af64d1e1aea14a56bafdfd8d47359c16.jpg)
Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)
![Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)](http://www.ecns.cn/hd/2018/06/04/5c57babb47024e76aed5fe5a61ebeabb.jpg)
Visitors view items in the Spirit of Invention: Nineteenth-Century U.S. Patent Models from the Hagley Museum and Library exhibition at the National Museum of China in Beijing, June 3, 2018. The exhibition presented 60 of Hagley’s 19th-century patent models. (Photo: China News Service/Jia Tianyong)