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 |
| 7530119 | Reversible necktie A new and improved reversible necktie is disclosed. The reversible necktie maintains the conventional appearance of traditional neckties, yet its versatile design allows it to be worn by either gender. The necktie comprises two display sides and an integrated revers... | 05/12/2009 |
| 7506907 | Apparatus for the latching and unlatching of a load An improved apparatus for latching and unlatching a load from a sling comprises a housing attachable to a load lift line extending from a crane or other similar equipment. Contained at least partially within the housing is a load engaging assembly including a latch,... | 03/24/2009 |
| 7458192 | Chair for supporting wire mesh An improved chair for supporting intersecting wires forming a wire mesh at a pre-selected elevated position above a bearing surface during formation of a concrete slab is constructed having a base member shaped to rest on the bearing surface, a compressible support ... | 12/02/2008 |
| 7442096 | Male electrical connector An improved single-pole, male, electrical connector for use in industrial applications involving very high currents (e.g., in excess of 1,000 amps) and a method for making and adjusting the connector are disclosed. The connector has a male pin with a slot along most... | 10/28/2008 |
| 7371221 | Cervical brace and therapy device A cervical brace and therapy device for use to rehabilitate an injured neck of a person is described having a base support structure shaped to fit about the neck and rest on the shoulders of the person; a support ring assembly attachable to the base support structur... | 05/13/2008 |
| 7325328 | Methods and apparatus to determine vessel draft and amount of cargo loaded in a vessel The present invention discloses the methods and apparatus to acquire, record, and analyze data to determine the draft of a water-borne vessel and/or the amount of cargo that has been loaded in a water-borne vessel. The apparatus includes a portable, handheld housing... | 02/05/2008 |
| D559531 | Case for a tobacco tin | 01/15/2008 |
| 7300680 | Soy protein products and methods for producing soy protein products A method for producing an enzymatically stabilized soy meal containing a naturally-occurring trypsin inhibitor to produce a soluble, pleasant-tasting soy product which comprises enzymatically deactivating the trypsin inhibitors in the soy meal without using heat, an... | 11/27/2007 |
| 7064269 | Quick connect electrical junction box assembly A quick connect electrical junction box assembly for receipt and support of electrical appliances including a first support member adapted to be attached to a building, the first support member having a female electrical receptacle connected thereto, a second suppor... | 06/20/2006 |
| 6880178 | Line guard with visible indicator The invention is drawn to a retractable guard for use in a sewerage or drainage line having a plurality of prongs with hooked ends are disposed within a sewage pipe downstream of a toilet. The opposite ends of the prongs are connected to a tubular member which, in t... | 04/19/2005 |