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The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 5732744 | Method and apparatus for aligning and supporting semiconductor process gas delivery and regulation components A mounting system, for supporting semiconductor process gas delivery and control components for assembly and use as a gas stick, aligns the connection union seals between fittings on adjacent components to absorb accumulated stresses resulting from manufa... | 03/31/1998 |
| 5524936 | Torque tight locking device A locking device for preventing relative rotation of pretorqued compression nuts used in face seal mechanical fittings includes an inner member having a cavity sized to slide onto and non-rotatably enclose the male or first nut of the fitting, an outer me... | 06/11/1996 |
