William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7257895 | Apparatus for machining, especially cutting tubular and round section bodies An apparatus for cutting workpieces adapted to engage the workpiece in at least four points of surface engagement. The apparatus has a clamping mechanism designed to be fastened to the workpiece. The clamping mechanism has a tool unit attached which includes adjustm... | 08/21/2007 |
| 7093811 | Clamping base The present invention is a clamping base, including a body capable of engaging with and holding a camera, and a second wall portion capable of being detached from and engaged with the body. The clamping base further includes a moving portion. The moving portion incl... | 08/22/2006 |
| 7074486 | Glazing with optical and/or energetic properties capable of being electrically controlled The subject of the invention is glazing which incorporates at least one electrically controllable system having variable optical and/or energy properties, especially in the form of a system comprising one or more reversible-insertion materials of the electrochromic-... | 07/11/2006 |
| 6746775 | Glazing with optical and/or energetic properties capable of being electrically controlled The subject of the invention is glazing which incorporates at least one electrically controllable system having variable optical and/or energy properties, especially in the form of a system comprising one or more reversible-insertion materials of the electrochromic-... | 06/08/2004 |
| 4932643 | Machinist's vise A vise has a housing block formed with a guide defining a longitudinal direction, a fixed jaw secured to the block, a movable jaw displaceable in the direction in the guide relative to the fixed jaw, and a spindle extending in the direction between the ja... | 06/12/1990 |