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自行车轮胎用作游泳救护圈 (德国, 1925)
![](http://www.770921.com/attachments/forumid_11/1108271124c08825deeec55a4c.jpg) 单轮摩托车(1931)
![](http://www.770921.com/attachments/forumid_11/11082711249cffeec9bf99f36e.jpg) 自行车‘Cyclomer’ (巴黎, 1932)
![](http://www.770921.com/attachments/forumid_11/110827112411aa2a67e7a296c2.jpg) 地形全能汽车(英格兰, 1936)
![](http://www.770921.com/attachments/forumid_11/110827112473a002e7800e3a99.jpg) 广播婴儿车 (美国, 1921)
![](http://www.770921.com/attachments/forumid_11/1108271124da93f25aadc8ec26.jpg) 广播帽 (美国, 1931)
![](http://www.770921.com/attachments/forumid_11/1108271124f5c7760f24ab4992.jpg) 防弹镜 (纽约, 1931)
![](http://www.770921.com/attachments/forumid_11/1108271124a11e3b0c4a438319.jpg) 超长旅游家用车(法国, 1934)
![](http://www.770921.com/attachments/forumid_11/11082711246e128e45a4967284.jpg) 充电加热夹克(美国, 1932)
![](http://www.770921.com/attachments/forumid_11/11082711247d71b875c06e35ce.jpg) 行人铲车(巴黎, 1924)
![](http://www.770921.com/attachments/forumid_11/110827112417c916d7368bbd0f.jpg) 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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