| Patents for B43L 3 - Writing or drawing-underlays, e.g. blotting pads (601) |
|---|
| 02/23/2000 | CN2365075Y Universal card for practising calligraphy |
| 12/29/1999 | CN2355893Y Backing plate for homework book |
| 12/01/1999 | CN2351295Y Writing-underlays |
| 11/03/1999 | CN2346599Y Writing bottom plate for examination |
| 09/23/1999 | WO1999047019A1 Key palette improvements |
| 09/23/1999 | CA2323899A1 Key palette improvements |
| 09/15/1999 | CN2338175Y Writing underlays for office use |
| 06/30/1999 | CN2326450Y Backing board |
| 10/20/1998 | US5823500 Clipboard drafting system |
| 09/16/1998 | CN2291312Y Underlay with computer inside |
| 06/24/1998 | CN2284695Y Multi-functional underlay preventing paper from rolling up |
| 05/27/1998 | CN1182682A Press board |
| 07/15/1997 | US5647488 Suspended sphere novelty |
| 07/09/1997 | CN2257522Y Writing underlay |
| 06/18/1997 | CN1152158A Desk-mat with keyboard instrument |
| 06/05/1997 | DE19633302C1 Writing implement with holder fixed to wearer's belt, and corresponding writing base |
| 04/17/1997 | DE19643449A1 Pultauflage mit Tasteninstrument Desk pad with keyboard instrument |
| 04/01/1997 | US5615817 Kneeboard with support ear |
| 03/12/1997 | CN1145053A Memo for forearm |
| 03/05/1997 | CN2248643Y Xuan paper good for tradition Chinese painting |
| 03/04/1997 | US5607223 Illuminated clipboard with movable writing surface |
| 12/04/1996 | EP0745343A1 A placemat |
| 11/28/1996 | DE19516197A1 Portable Arbeitsplatte Portable Countertop |
| 11/20/1996 | EP0743197A1 Memo for forearm |
| 11/14/1996 | WO1996035590A1 Portable working plate |
| 09/24/1996 | US5558921 Note writer's frugal aid |
| 06/19/1996 | CN2229357Y Writing board with illuminating device |
| 06/13/1996 | WO1996017731A1 Memo for forearm |
| 05/15/1996 | CN2227029Y Wooden electrothermal writing plate |
| 04/24/1996 | CN2225363Y Multipurpose writing board |
| 03/26/1996 | US5502623 Illuminated clipboard |
| 03/20/1996 | EP0701518A1 Plate to be clamped |
| 03/20/1996 | CN2222620Y Multifunctional underlay with square |
| 10/19/1995 | WO1995027644A1 Plate to be clamped |
| 10/05/1995 | DE19515113A1 Writing block for use in the open |
| 07/19/1995 | CN2203658Y Special blotting pad for standardized examination |
| 07/11/1995 | US5432687 Illuminated writing paper memo system |
| 05/24/1995 | CN2198123Y Magnetic drawing sheet |
| 03/08/1995 | CN2191100Y Working entertainment pad |
| 02/07/1995 | US5386964 Desk pad comprising a fibrous backing and a substantially smooth facing |
| 01/25/1995 | CN2188037Y Adjustable electric heating glass sheet |
| 01/04/1995 | CN2186666Y Electrothermal writing glass table plate |
| 12/27/1994 | US5377085 Enclosed lighted lap-desk |
| 11/01/1994 | US5360342 Coloring board with attached crayons |
| 10/26/1994 | CN2180484Y Rubber concative penmanship exercising table pad |
| 10/19/1994 | CN2179829Y Convenient glass underlay |
| 09/15/1994 | WO1994020310A1 Drawing device including a case with a transparent screen |
| 09/15/1994 | WO1994020309A1 Adaptable shopping list support |
| 06/08/1994 | CN2167609Y Bureau plate |
| 05/10/1994 | US5309788 Tilt coupling |
| 04/27/1994 | EP0594466A1 Apparatus for securing an article to a users leg |
| 04/24/1994 | CA2109175A1 Apparatus for securing an article to a user's leg |
| 04/13/1994 | CN2161477Y Writing or drawing-underlay |
| 03/30/1994 | CN2159884Y Health pen holder |
| 03/15/1994 | US5294032 Notepad holder for automobiles |
| 02/23/1994 | CN2157048Y Templet for answering test paper to be read by computer |
| 01/19/1994 | CN2153470Y Electrothermal writing board |
| 01/18/1994 | US5280415 Illuminated chart holder |
| 01/05/1994 | CN2151866Y Multifunction writing pad |
| 12/22/1993 | CN2150079Y Electric appliance used on desk for working or learning |
| 12/22/1993 | CN2150063Y Vision-protective writing-underlay for putting student in right writing pisition |
| 11/24/1993 | CN2147117Y Pad board for student |
| 11/03/1993 | CN2145117Y Multipurpose lining board for writing with water |
| 10/26/1993 | US5255612 Apparatus for securing an article to a user's leg |
| 10/06/1993 | CN2143183Y Fringed glass on table |
| 09/28/1993 | CA2092213A1 Reinforced paper office supplies and method of making them |
| 09/24/1993 | CA2092212A1 Reinforced shelf filing folders |
| 08/25/1993 | CN2140839Y Backing board specially adapted for drawing off and on line |
| 08/25/1993 | CN1075452A Two-purpose desk mirror |
| 08/18/1993 | CN2140305Y Electrothermal writing board |
| 08/15/1993 | CA2068072A1 Illuminated clipboard |
| 08/03/1993 | US5232247 Writing assistance assembly for disabled people |
| 06/10/1993 | WO1993010689A1 Integral clipboard and reading light |
| 05/19/1993 | CN2133461Y Electric heating desk lamp plate for writing |
| 05/04/1993 | US5207582 Breast self-examination facilitator |
| 04/28/1993 | CN2130701Y Writing underlay capable of writing name |
| 04/21/1993 | CN2130135Y Electronic constant writing board |
| 04/21/1993 | CN2130134Y Heat storage writing electric board |
| 01/05/1993 | US5176438 Integral clipboard and reading light |
| 12/30/1992 | CN2126151U Convenient book clip |
| 12/23/1992 | CN2125509U Spring glass desk board |
| 12/22/1992 | US5173834 Electrostatic attraction apparatus |
| 12/02/1992 | CN2123436U 书写垫 Writing pad |
| 11/25/1992 | EP0514425A1 Drawing apparatus |
| 11/17/1992 | US5163748 Illuminated clipboard |
| 11/11/1992 | CN2121341U Multi-layer compound plastic paper color printing backing plate |
| 08/19/1992 | CN2113168U Temp. regulating electrothermal glass plate |
| 03/25/1992 | CN2099679U Electrothermal writing desk-board |
| 02/26/1992 | CN2097097U Multifunctional recreation writing-underlay |
| 01/28/1992 | US5083736 Pencil holder for golf carts |
| 01/22/1992 | CN2093755U Multi-functional pupil writing underlay |
| 01/08/1992 | CN2092441U Electric-warming writing board |
| 12/25/1991 | CN2091228U Multi-purpose writing sweat-proof board |
| 12/18/1991 | CN2090778U Writing underlay |
| 10/17/1991 | WO1991012143A3 Drawing apparatus |
| 09/10/1991 | US5046760 General purpose clipboard |
| 09/10/1991 | CA1288798C Lap-oriented portable desk units |
| 08/22/1991 | WO1991012143A2 Drawing apparatus |
| 08/20/1991 | US5041326 Electroluminescent laminate assembly |
| 06/11/1991 | US5022170 Work surface information display pad |