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Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US39696065 Ago 197413 Jul 1976Electrically heated stylus for transferring a printing medium
US417627318 Oct 197727 Nov 1979Olympus Optical Company LimitedLight and heat writing pen for photosensitive material
US537480624 Jun 199320 Dic 1994Pen base electric heat sealer
US544141820 May 199315 Ago 1995Binney & Smith Inc.Thermochromic drawing device
US551463529 Dic 19937 May 1996Optum CorporationThermal writing surface and method for making the same
US56414183 Dic 199324 Jun 1997Pen base electric heat sealer
US604055921 Mar 199721 Mar 2000Welcome Company, Ltd.Electric heat pen with sandwiched heater element
US606403812 Ago 199816 May 2000Welcome Company, Ltd.Hand-held electric sealer with detachable heat resistant cover sheet
US62325799 Nov 199815 May 2001Welcome Co., Ltd.Electric heat sealer with safety device
US63265949 Dic 19984 Dic 2001Welcome Company, Ltd.Hand-held electric sealer with safety means
US63355151 Feb 20001 Ene 2002Welcome Company, Ltd.Electric heat sealer with offset sealer portion
US662785312 Dic 200030 Sep 2003Welcome Company, Ltd.Electric heat sealer with safety device
US663064724 Jul 20027 Oct 2003Welcome Co., Ltd.Hand-held electric heat sealer
US69367908 Ago 200330 Ago 2005Electric heat sealer with safety device
US703425218 Dic 200025 Abr 2006Welcome Co., Ltd.Hand-held electric heat sealer
US729181011 Ene 20066 Nov 2007Welcome Co., Ltd.Hand-held electric heat sealer
US731501029 Ago 20051 Ene 2008WELCOME Co., Ltd.Electric heat sealer with safety device

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