Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| D660235 | Plug with a pull ring | 05/22/2012 |
| D657313 | Plug | 04/10/2012 |
| D654435 | Outlet adaptor | 02/21/2012 |
| D653214 | Electrical device | 01/31/2012 |
| D652800 | Plug with a pull ring | 01/24/2012 |
| D652383 | Plug | 01/17/2012 |
| D651976 | Plug | 01/10/2012 |
| D650335 | Plug | 12/13/2011 |
| D648678 | Electrical plug adapter | 11/15/2011 |
| D638359 | 50 amp electrical connector head replacement plug | 05/24/2011 |
| D635514 | Electrical plug | 04/05/2011 |
| D635515 | 30 amp electrical connector head replacement plug | 04/05/2011 |
| D623594 | Power plug | 09/14/2010 |
| D620889 | Plug | 08/03/2010 |
| D614571 | Plug connector | 04/27/2010 |
| D610093 | Cable connector | 02/16/2010 |
| D592140 | Cable connector | 05/12/2009 |
| D592139 | Plug connector | 05/12/2009 |
| D591680 | Electrical extension cord plug and receptacle | 05/05/2009 |
| D586296 | Plug | 02/10/2009 |
| D585378 | Plug | 01/27/2009 |
| D562766 | Power adaptor | 02/26/2008 |
| D553570 | Power outlet plug | 10/23/2007 |
| D549651 | Electrical connector head replacement plug | 08/28/2007 |
| D538746 | Plug termination handles | 03/20/2007 |
| D536303 | Wall plug | 02/06/2007 |
| D535947 | Wall plug | 01/30/2007 |
| 7153148 | Electronic device having a sliding cap An electronic device having a sliding cap mainly includes a body, a sliding cap and an elastic element. The body has a transmission end that has a terminal section to couple with external electronic equipment, and a moving area on the outer surface. The sliding cap ... | 12/26/2006 |
| D533837 | Electrical plug | 12/19/2006 |
| D498462 | Adapter plug | 11/16/2004 |
| D493142 | Assist plug | 07/20/2004 |
| D489329 | Electric plug for a power cord | 05/04/2004 |
| 5256076 | Safety electrical receptacle A safety electrical receptacle for household, commercial, or industrial use is described which will not transmit electrical energy through an electrical plug to output wiring until normally open switches positioned in the path of travel of the electrical ... | 10/26/1993 |
| 5252081 | Plug for use with self regulating cable A plug for use with self-regulating cables or the like is disclosed. The plug enables simple and safe installation of a self-regulating cable or the like into the plug. It also enables an operator to connect the conductors of the plug to the cable conduct... | 10/12/1993 |
| 5219304 | Electrical plug This invention relates to an electrical plug and in particular to one including a body portion, a plurality of blades extending through the body portion into an inner edge of a recess portion of the body so that their connecting ends are disposed in separ... | 06/15/1993 |
| 4138185 | Electric cord clamp device Two separate but identically shaped sections cooperate to form an electrical cord gripping device when they are brought together. The sections are insertable into recesses in cooperating halves of an electrical housing, by wedging or snapping them into pl... | 02/06/1979 |
| 4008382 | Safety electrical plug An electrical plug adaptable for joining the conductors of an attached line cord to a socket, in which conducting elements are mounted on one or more discs rotatably mounted in the plug so that the plug conducts electricity only when the discs are rotated... | 02/15/1977 |
| 3943310 | Male connector plug with improved switch mechanism A two part cylindrical insulation body for a male electrical plug is provided with a recess at the abutting end face and a two section prong has sections carried by respective body portions with flexible switch contact within the recess and facing each ot... | 03/09/1976 |
