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计算工具 (Calculating Machines and Devices)...
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密码机 (Cipher Machines)...
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信息处理 (Data Processing)...
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远程通讯工具 (Telecommunication)...
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自来水笔 (Fountain Pens)...
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办公用具和设施 (Office Equipment and Furniture)...
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打字机 (Typewriters)...
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航海用具 (Nautical Antiques)...
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航空用具 (Aircraft Motoring)...
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机动车和自行车 (Automobilia & Bikes)...
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科学仪器和实验室用品 (Scientific Instruments and Labora...
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显微镜-德国产 (Microscopes Germany)...
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显微镜-法国产 (Microscopes France)...
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显微镜-英国产 (Microscopes England)...
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显微镜及目镜-其他 (Microscopes and Loupes various)...
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光学仪器 (Optical Instruments)...
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测量工具 (Surveying Instruments)...
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电气技术 (Electrical Engineering)...
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测量仪表 (Measuring Instruments)...
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文献 (Contemporary Documents)...
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家居用品 (Household and Living Appliances)...
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古老行业工具 (Tools of old Professions)...
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印刷机和装订机 (Printer and Bookbinder)...
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医药技术 (Pharmacy and Medical Technology)...
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美国专利申请模型 (U.S.Patent Models and Salesman Samp...
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自动贩卖机和自动游戏机 (Vending and Gambling Machines)...
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钟表 (Clocks and Watches etc.)...
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机械乐器 (Mechanical Music Instruments)...
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气动乐器 (Pneumatical Musical Instruments)...
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唱片留声机 (Gramophones)...
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滚筒留声机 (Phonographs)...
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盘片音乐盒 (Disc Musical Boxes)...
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滚筒音乐盒 (Cylinder Musical Boxes)...
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自动玩偶音乐机 （Musical Doll Automata)...
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玩偶和自动玩偶 (Dolls and Automata)...
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铅皮玩具汽车 (Tin Toy Cars)...
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铅皮玩具摩托车 (Tin Toy Motorcycles)...
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铅皮玩具 (Tin Toys)...
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蒸汽机 (Steam Engines)...
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火车模型 (Model Trains)...
