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"Everyone acquainted with the subject will recognize it as a conspicuous failure."
Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
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| Number | Title | Issue Date |
| 5173433 | Method for chemical analysis A chemical analysis test device for detection of a selected chemical in a biological fluid is disclosed wherein the test is preformed on a rigid base containing a detection well for holding a reagent and a specimen well for holding a sample of the biologi... | 12/22/1992 |
| 5091153 | Chemical analysis test device A chemical analysis test device for detection of a selected chemical in a biological fluid is disclosed wherein the test is preformed on a rigid base containing a detection well for holding a reagent and a specimen well for holding a sample of the biologi... | 02/25/1992 |
