Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7787120 | Spectrophotometer and liquid chromatography system Detection sensitivity is improved by increasing the amount of light of beams that irradiate a sample cell without causing saturation of a detector with ultraviolet beams or visible beams. This spectrophotometer includes a sample cell, which stores a sample to be mea... | 08/31/2010 |
