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 |
| 7771079 | Compact reflector fluorescent lamp with good heat dispersion A compact reflector fluorescent lamp unit includes a lamp cap, a lamp tube, an electronic ballast assembly, a circuit board, a housing, an intermediate plate, a reflection cup, and a transparent plate. The intermediate plate and the housing, the intermediate plate a... | 08/10/2010 |
| D617014 | Lamp | 06/01/2010 |
| D616367 | Lamp holder | 05/25/2010 |
| 7714494 | Plug-in fluorescent lamp and lamp holder used therewith A split fluorescent lamp comprising a lamp body having a pluggable lamp cap and a lamp base with which the pluggable lamp cap is engaged, characterized in that an electronic ballast is embedded in the pluggable lamp cap, wherein the overall dimension of the lamp bod... | 05/11/2010 |
| D614782 | Lamp | 04/27/2010 |
| 7688006 | Stepless dimming fluorescent lamp and ballast thereof A fluorescent lamp adapted for effecting stepless dimming with a regular SCR dimmer, comprising a filter and rectifier circuit (1), a DC high voltage stabilizing circuit (2), a voltage signal detection and frequency control circuit (6), a lamp l... | 03/30/2010 |
| D603982 | Lamp | 11/10/2009 |
| D602182 | Lamp | 10/13/2009 |
| D602181 | Lamp | 10/13/2009 |
| D602180 | Lamp | 10/13/2009 |
| D602179 | Lamp | 10/13/2009 |
| D602178 | Lamp | 10/13/2009 |
| D601725 | Fluorescent lamp | 10/06/2009 |
| D601723 | Lamp | 10/06/2009 |
| D601722 | Lamp | 10/06/2009 |
| D601721 | Lamp | 10/06/2009 |
| D595435 | Fluorescent tube | 06/30/2009 |
| D593688 | Fluorescent tube | 06/02/2009 |
| D585148 | Fluorescent tube | 01/20/2009 |
| D585147 | Fluorescent tube | 01/20/2009 |
| D581559 | Fluorescent tube | 11/25/2008 |
| D581557 | Fluorescent lamp | 11/25/2008 |
| D581558 | Fluorescent tube | 11/25/2008 |
| 7429832 | Light control fluorescent lamp and circuit thereof A light control circuit for use in light control fluorescent lamps comprises a filter and rectifier circuit (1), a frequency control and resonant circuit (2) and an ambient brightness signal sampling and control circuit (4); wherein the ambient ... | 09/30/2008 |
| D577134 | Fluorescent lamp | 09/16/2008 |
| D577135 | Fluorescent lamp | 09/16/2008 |
| 7381070 | Safety lampholder and method for avoiding accidental electric shock caused by lampholder A safety lampholder is disclosed, comprising an insulating housing; an insulating or electrically conductive lamp socket placed within one end of the housing; an electrically shockproof means fully integrated within another end of the housing, wherein the shockproof... | 06/03/2008 |
| D568499 | Spiral lamp tubes | 05/06/2008 |
| D560287 | Spiral lamp tubes | 01/22/2008 |
| D559411 | Fluorescent tube | 01/08/2008 |
| D558905 | Spiral lamp tubes | 01/01/2008 |
| D556348 | Fluorescent lamp | 11/27/2007 |
| D550866 | Fluorescent tube | 09/11/2007 |
| D550867 | Fluorescent tube | 09/11/2007 |
| D547886 | Fluorescent lamp | 07/31/2007 |