| Patents for B43L 12 - Means to prevent slippage (552) | |
|---|---|
| 10/2007 | |
| 10/31/2007 | CN101062640A Multifunctional triangle for teaching |
| 10/24/2007 | CN200964001Y Multi-functional rubber |
| 10/24/2007 | CN200963994Y 教学三角板 Teaching triangle |
| 10/24/2007 | CN200963990Y Teaching compasses |
| 10/24/2007 | CN200963989Y Teaching compasses |
| 10/24/2007 | CN200963987Y Compasses ruler for blackboard |
| 10/17/2007 | CN200960812Y Electromagnetic compasses for teaching |
| 10/10/2007 | CN200957720Y Teaching sucker-type compasses |
| 09/2007 | |
| 09/05/2007 | CN200942660Y Ingenious convenient teaching compasses |
| 08/2007 | |
| 08/15/2007 | CN101016015A 袖珍教学圆规 Teaching pocket compass |
| 07/2007 | |
| 07/18/2007 | CN2923360Y 磁性尺子 Magnetic ruler |
| 07/04/2007 | CN2918093Y 圆规 Compasses |
| 07/04/2007 | CN2918091Y Multipurposed ruler |
| 01/2007 | |
| 01/18/2007 | CA2548870A1 Promotional erasable memo board with detachable coupons |
| 01/10/2007 | CN1894110A Handheld layout and marking tool |
| 11/2006 | |
| 11/29/2006 | EP1726454A1 Drafting instrument |
| 10/2006 | |
| 10/12/2006 | WO2006060847A3 Sewing rule steady |
| 06/2006 | |
| 06/14/2006 | CN2787470Y Convenient ruler |
| 05/2006 | |
| 05/02/2006 | US7036952 Single body multi-tool device |
| 04/2006 | |
| 04/25/2006 | US7032319 Ruler with anti-slipping member |
| 03/2006 | |
| 03/07/2006 | US7008076 Folding knife light tool |
| 11/2005 | |
| 11/03/2005 | US20050241508 Guide system for forming ink images |
| 08/2005 | |
| 08/25/2005 | WO2005012002A3 Transfer template |
| 08/03/2005 | EP1559578A2 White board eraser |
| 04/2005 | |
| 04/28/2005 | US20050086819 Ruler with anti-slipping member |
| 02/2005 | |
| 02/10/2005 | WO2005012002A2 Transfer template |
| 01/2005 | |
| 01/11/2005 | US6839974 Multi-function layout square with laser |
| 12/2004 | |
| 12/23/2004 | US20040256535 Assistive ergonomic desktop system and modular components |
| 11/2004 | |
| 11/24/2004 | EP1478521A1 A ruler with anti-slipping member |
| 09/2004 | |
| 09/30/2004 | US20040187313 Folding knife light tool |
| 09/21/2004 | US6793427 Writing aid for children, handicap or elderly individuals and method therefor |
| 09/09/2004 | US20040174700 Single body multi-tool device |
| 09/09/2004 | US20040172839 Multi-use tool |
| 08/2004 | |
| 08/24/2004 | US6779937 Accessory grip for elongate instrument |
| 08/2003 | |
| 08/14/2003 | WO2003066348A1 A ruler with anti-slipping member |
| 03/2001 | |
| 03/21/2001 | CN2424023Y Anti-skid easy-to-take ruler |
| 06/2000 | |
| 06/14/2000 | CN2382570Y Anti-slip compass for teaching |
| 12/1999 | |
| 12/08/1999 | EP0804345A4 Non-slip sewing ruler |
| 01/1998 | |
| 01/28/1998 | CN2273256Y Antisliding compasses for education |
| 11/1997 | |
| 11/05/1997 | EP0804345A1 Non-slip sewing ruler |
| 04/1997 | |
| 04/01/1997 | US5615488 Non-slip sewing ruler |
| 10/1996 | |
| 10/23/1996 | CN2238153Y Fixed bracket for T-square |
| 05/1996 | |
| 05/09/1996 | WO1996013393A1 Non-slip sewing ruler |
| 12/1995 | |
| 12/05/1995 | US5471749 Non-slip sewing ruler |
| 07/1991 | |
| 07/02/1991 | CA1285384C Draughting tables, drawing boards, drawing instruments and analogous apparatus |
| 05/1991 | |
| 05/07/1991 | US5012586 Plotting and drafting apparatus with magnetic guide |
| 01/1991 | |
| 01/09/1991 | EP0295267B1 Magnetically oriented draughting instrument |
| 06/1990 | |
| 06/19/1990 | US4934061 Draughting tables, drawing boards, drawing instruments and analogous apparatus |
| 08/1989 | |
| 08/08/1989 | US4854049 Magnetic cropper |
| 12/1988 | |
| 12/07/1988 | EP0293628A1 Drawing head |
| 10/1987 | |
| 10/08/1987 | WO1987005863A1 Magnetically oriented draughting instrument |
| 04/1985 | |
| 04/24/1985 | EP0137950A1 Anti-slide coating |