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