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| Patents for B01L 7 - Heating or cooling apparatus; Heat insulating devices (6,904) |
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| 03/30/1976 | US3947244 Heap pipe vacuum furnace | | 03/09/1976 | US3942952 Sample platter moisturizing system | | 02/24/1976 | US3940249 Laboratory testing procedure | | 02/03/1976 | US3936660 Hot plate |
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