Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769) |
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12/22/1993 | CN2150069Y Pen for vanishing character and correcting mistake |
12/22/1993 | CN2150067Y Direct-reading ruler |
12/22/1993 | CN2150063Y Vision-protective writing-underlay for putting student in right writing pisition |
12/22/1993 | CN2149804Y Multi-purpose combined writing case |
12/15/1993 | CN2149300Y Multi-function interesting drawing templet |
12/15/1993 | CN2149299Y Multi-function geometry appliance for teaching use |
12/15/1993 | CN2149298Y Composition type drawing angles ruler |
12/15/1993 | CN2149297Y Multi-function drawing instrument |
12/15/1993 | CN2149296Y Appliance for eye-protection when reading |
12/15/1993 | CN2149293Y Multi-function compass |
12/15/1993 | CN1079434A U-shaped multifunctional adjustable rule |
12/09/1993 | WO1993024327A1 A method and an apparatus for illuminating points on a medium |
12/09/1993 | WO1993024326A1 A method and a device for retaining a thin medium between two bodies |
12/08/1993 | CN2148686Y Corrector for writing posture |
12/08/1993 | CN2148685Y Multi-function adjustable angle square |
12/08/1993 | CN2148684Y Anti-myopia combined reading appliance |
12/08/1993 | CN2148683Y Multi-purpose drawing instrument |
12/01/1993 | CN2147973Y Multifunctional combined drawing instrument |
12/01/1993 | CN2147972Y Sight health rest for student |
12/01/1993 | CN2147971Y Learning pose correction appliance |
12/01/1993 | CN2147969Y Myopia prevention health propelling pencil |
12/01/1993 | CN1078943A Concave mould training board for handwriting |
12/01/1993 | CN1078942A Moveable outer moulding machine and method for diminishing or enlarging mould |
11/24/1993 | CN2147126Y Multi-function drawing instrument |
11/24/1993 | CN2147125Y Multi-function writing brush hand holder |
11/24/1993 | CN2147124Y Universal rule |
11/24/1993 | CN2147123Y Convenient reading frame |
11/24/1993 | CN2147122Y Wafer type angle measuring and round drawing device |
11/24/1993 | CN2147119Y Multi-function drawing rule |
11/24/1993 | CN1078688A Auxiliary operator for pen writing calligraphy |
11/24/1993 | CN1078687A Multifunctional inductive vision protector |
11/23/1993 | US5263259 Design apparatus |
11/17/1993 | CN2146377Y Filling and scribbling means for computer-read card |
11/17/1993 | CN2146376Y Nearsightedness preventer for pupils |
11/16/1993 | US5262797 Monitoring and controlling quality of pen markings on plotting media |
11/10/1993 | CN2145714Y Writing exercises device for hard painting and calligraphy |
11/10/1993 | CN2145713Y Frame copybook for calligraphy |
11/10/1993 | CN2145712Y Myopia-proof writing frame |
11/10/1993 | CN2145711Y Vision protector |
11/10/1993 | CN2145710Y Multipurpose plotting apparatus |
11/09/1993 | US5261039 Image forming apparatus capable of informing user of processing time necessary before image recording is started |
11/09/1993 | US5261038 Pen qualification and verification in a graphics plotter |
11/09/1993 | CA2038247C Drawing device for use in drafting machine |
11/03/1993 | CN2145121Y Multifunction drawing formwork |
11/03/1993 | CN2145120Y Adjustable nut drawing instrument |
11/03/1993 | CN2145119Y Stright line ruler and its line drawing pen clip apparatus |
11/03/1993 | CN2145109Y Multitime exercise-book for writing |
10/28/1993 | DE4213595A1 Graphical representation equipment using whiteboard - has whiteboard with printer facility to reproduce images from computer or scanner |
10/27/1993 | CN2144589Y Multipurpose geometry slide rule |
10/27/1993 | CN2144588Y Gage for drawing movable coordinate |
10/27/1993 | CN2144587Y Multifunctional shape changeable rule |
10/27/1993 | CN2144586Y Multifunctional set square |
10/20/1993 | CN2144062Y Instrument for drawing perspective |
10/20/1993 | CN2144061Y Dual-purpose health care device for writing and reading book |
10/20/1993 | CN2144060Y Corrector for children's reading and writing posture |
10/14/1993 | WO1993019943A1 Toy for drawing or moving over a drawing |
10/13/1993 | CN2143561Y Teacher going over exam paper device for standardization adaptability test |
10/13/1993 | CN2143560Y Multifunction drawing instrument |
10/06/1993 | CN2143185Y Microelectronic integrated eye protector |
10/06/1993 | CN2143184Y Moveable writing support for health |
10/06/1993 | CN2143065Y Multifunctional health-care stationery box |
09/29/1993 | CN2142792Y Hand shape learning instrument |
09/29/1993 | CN2142791Y Combined multi-purpose drawing instrument |
09/29/1993 | CN2142787Y Vision-protecting file |
09/22/1993 | CN2142398Y Near-sight protection pen |
09/21/1993 | US5247487 Spatial measurement recovery system |
09/21/1993 | CA2090446A1 Drawing aid |
09/16/1993 | DE4307582A1 Printer or plotter with print head pin raised for movement over paper - uses electromagnet operating cord to cause rail to pivot through small angle to displace print head support arm and so raise pen clear of surface |
09/15/1993 | CN2142076Y Calligraphy models with adhesive film |
09/15/1993 | CN2142075Y Myopia-proof reading & writing frame for pupils |
09/15/1993 | CN2141977Y Adjustable folding desk with stool |
09/15/1993 | CN2141976Y Rotary book-shelf |
09/08/1993 | CN2141773Y Sight protector |
09/08/1993 | CN1075919A Fourteen function teacher's pointer |
09/07/1993 | US5243362 Rolled sheet rolling control method of paper-moving type plotter |
09/07/1993 | US5241756 For duplicating an irregular straight sided shape |
09/01/1993 | CN2141362Y Thick and thin hard pen character writing imitate plate |
09/01/1993 | CN2141361Y Hard pen penmanship quick learning plate |
08/25/1993 | CN2140839Y Backing board specially adapted for drawing off and on line |
08/25/1993 | CN2140838Y Drawing magic board |
08/25/1993 | CN2140837Y Multi-purpose set square |
08/25/1993 | CN2140836Y Quick device of practising calligraphy |
08/25/1993 | CN2140835Y Monitoring ruler for eyesight protection |
08/24/1993 | US5239315 Penstocker of automatic drafting machine |
08/18/1993 | CN2140311Y 3-d geometric drawing board |
08/18/1993 | CN2140310Y Mechanical emulating instrument |
08/18/1993 | CN2140309Y Myopia-proof writing frame |
08/18/1993 | CN2140308Y Multifunctional assembled rule |
08/18/1993 | CN2140307Y Combined drawing rule |
08/12/1993 | DE4302751A1 Base for painting, drawing and writing - includes pencil(s), has flat laterally edged surface with fixture device in central area |
08/11/1993 | CN2139896Y Finger protective ring for writing |
08/11/1993 | CN2139895Y Anti-myopia writing posture corrector |
08/11/1993 | CN2139892Y Pen cover on finger |
08/11/1993 | CN1075072A Head cushion and relevant desk work equipment thereof |
08/04/1993 | EP0553129A1 Surveyor's drafting aid |
08/04/1993 | CN2139525Y Multipurpose templet for standard test |
08/04/1993 | CN2139524Y Drawing set square |
08/04/1993 | CN2139523Y Rolling anti-counterfeit bill writing device |
08/04/1993 | CN2139522Y Pointer type stepless sectrix instrument |
08/04/1993 | CN2139518Y 舒适笔 Comfortable pen |