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 |
| D650002 | Spectacle frame | 12/06/2011 |
| D633551 | Spectacle frame | 03/01/2011 |
| 7717554 | Rimless eyeglasses having side branches essentially of wire structure The invention relates to rimless eyeglasses comprising a bridge (13) interconnecting two lenses (V), and two side branches (11) connected to respective side zones of the corresponding lenses (V). In accordance with the invention, each side branch (1... | 05/18/2010 |
| 7670000 | Eyeglasses of the rimless type with wire branches The invention relates to eyeglasses of the rimless type comprising a bridge interconnecting the two eyeglass lenses, and two side branches of wire structure connected to respective side zones of the corresponding lenses, each side branch having a main portion togeth... | 03/02/2010 |
| D598946 | Auxiliary screen for spectacles | 08/25/2009 |
| D569893 | Spectacles | 05/27/2008 |
| 7264348 | Spectacles of the rimless type having hinge-less wire side-arms that are deformable in flexing The invention relates to spectacles of the rimless-type, comprising a bridge interconnecting two lenses, and two side arms that are hinge-less wire structures suitable for flexing. According to the invention, each side arm presents a distal end arranged to fasten to... | 09/04/2007 |
| D544519 | Spectacle frame | 06/12/2007 |
| 6834954 | Spectacles of the type without a surround The invention provides spectacles of the type without a surround, comprising a bridge interconnecting two lenses, and two hinged side arms, each side arm being mounted to pivot about a horizontal axis that is oblique, between a deployed position for use and a folded... | 12/28/2004 |