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 自行车轮胎用作游泳救护圈 (德国, 1925)  
     单轮摩托车(1931)  
     自行车‘Cyclomer’ (巴黎, 1932)  
     地形全能汽车(英格兰, 1936)  
     广播婴儿车 (美国, 1921)  
     广播帽 (美国, 1931)  
     防弹镜 (纽约, 1931)  
     超长旅游家用车(法国, 1934)  
     充电加热夹克(美国, 1932)  
     行人铲车(巴黎, 1924)  
     早期GPS (1932)   [img]http://www.770921.com/attachments/forumid_11/1108271124fb3b9ed86bfdc669.jpg[/img]   [img]http://www.770921.com/attachments/forumid_11/110827112413a9cb03244c94f9.jpg[/img]   紧急折叠桥 (Netherlands, 1926)   [img]http://www.770921.com/attachments/forumid_11/11082711246bb1f4ae47957a67.jpg[/img]   传真报(1938)
  [img]http://www.770921.com/attachments/forumid_11/1108271124be638df04b683454.jpg[/img]   暴雪脸部保护 (加拿大, 1939)
  [img]http://www.770921.com/attachments/forumid_11/11082711247f6e3a6af55992a4.jpg[/img]   防毒气婴儿车 (英格兰, 1938)
  [img]http://www.770921.com/attachments/forumid_11/11082711245fff108d0837ff8c.jpg[/img] 	
 
 
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