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| Number | Title | Issue Date |
| 5544276 | Miniature gas chromatograph with heated gas inlet fitting, heated tubing, and heated microvalve assembly A miniature gas chromatograph with thermostatically-controlled heating of its component parts which contact and conduct the sample to the analytical column. The microvalve assembly of the gas chromatograph is heated by passing a thermostatically-controlle... | 08/06/1996 |
| 4474889 | Miniature gas chromatograph apparatus A gas chromatography assembly has a substrate wafer with grooves and a valve seat etched therein. A plate cooperates with the wafer and the grooves to define gas channels: a carrier gas channel and a sample gas channel, each passing through the valve seat... | 10/02/1984 |
