Patents
Sitemap › B43 - Writing or drawing implements; Bureau accessories › B43L - Articles for writing or drawing upon; Accessories for writing or drawing › B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for
Patents for B43L 13 - Drawing instruments, or writing or drawing appliances or accessories, not otherwise provided for (6,769)
12/1989
12/20/1989CN2049604U Multi-purpose templet for drawing grid
12/20/1989CN2049600U Pencil for studying to use
12/19/1989US4888710 Pen tip position detector
12/14/1989WO1989011972A1 A musician's stave scriber
12/13/1989CN2049189U Combined drawing instrument
12/12/1989CA1263851A1 Pen turret rotation for plotters
12/07/1989DE3916345A1 Einrichtung zum transportieren von papier bei einem plotter Means for transporting paper to a plotter
12/06/1989CN2048959U Camber measuring and mapping device for vane
12/06/1989CN2048825U International pattern plate for mechanical drawing
12/06/1989CN2048824U Training tool for holding pen
12/06/1989CN2048823U Simple multipurpose rule
12/06/1989CN2048822U Multifunctional coupled rule of arbitrary angles
12/05/1989US4885701 Pen turret control system
11/1989
11/30/1989WO1989011634A1 Plotter with flatbed and tool carriage
11/29/1989EP0343237A1 Apparatus for changing a sensing device
11/22/1989CN2048026U Templet for criminal scene mapping
11/22/1989CN2048025U Pattern plate of site artwork
11/22/1989CN2048024U Appliance used for holding pen correctly
11/15/1989CN2047634U Multi-functional compass
11/01/1989CN2046817U Step mechanism for drawing equidistance parallel lines
11/01/1989CN2046816U Universal perspective drawing coordinate ruler
11/01/1989CN2046815U Circle equal devided protractor
11/01/1989CN1036730A Variable-curvature arcograph
10/1989
10/25/1989CN2046453U Small combined painting handicraft stand
10/25/1989CN2046446U Adjustable parallel lines scale
10/25/1989CN2046445U Vision distance standard apparatus for writing
10/19/1989DE3811762A1 Drawing machine with drawing pen
10/18/1989CN2046081U Set square specially for science study of students
10/18/1989CN1005472B Scorpion model angle protractor
10/11/1989EP0336752A2 Improvements in and relating to a method of and apparatus for producing an enlargement of a visual representation
10/11/1989CN2045700U Proportion square ruler
10/05/1989WO1989009139A1 Drafting device
10/05/1989WO1989009119A1 Scribing and pantographic guide
10/04/1989CN2045359U Multipurpose geometric drawing template
10/04/1989CN2045358U Multipurpose drawing instrument capable of drawing ellipse
10/03/1989US4872027 Printer having identifiable interchangeable heads
10/03/1989US4870759 Activity entry apparatus for making time entries on pre-established time log forms
09/1989
09/28/1989DE3809034A1 Drawing head
09/27/1989CN2044937U Multi-technological pen rack
09/20/1989CN2044552U Drawing and writing combined tool
09/19/1989US4866848 Instrument for subdividing angles into halves, thirds or fifths
09/13/1989CN2044212U Portable sitting position corrector
09/13/1989CN2044211U Multi-functional moveable scale
09/06/1989CN2043922U Portable writing box with light inside
09/06/1989CN2043921U Convenient apparatus for children learning
09/06/1989CN2043920U Drawing and sketch pike sheet
09/05/1989US4862597 Variable stencil
09/05/1989US4862592 Write head for a drawing machine having a deformable mounting for a writing member
08/1989
08/31/1989DE3805351A1 Staff line ruler
08/30/1989CN2043557U 万用绘图尺 Universal drawing ruler
08/29/1989US4862377 Detecting workpiece orietation and treating workpieces without reorieting
08/23/1989CN2043191U Posture alarm device for children reading and writting
08/23/1989CN2043190U Multifunctional compass
08/23/1989CN2043189U Moving multiedge scale
08/16/1989CN2042800U Multipurpose drawing instrument
08/16/1989CN2042799U Equidistance parallel line plate
08/16/1989CN1034694A Fixed point-eliminating method for drawing perspectives and relevant perspective plotter
08/15/1989US4856919 Pen printer
08/15/1989US4856197 Drawing device having retractable stylus
08/15/1989CA1258367A1 Tool guide
08/09/1989EP0327511A2 Supplying assembly for notching plotters
08/09/1989EP0327132A2 Image forming member drive device of an automatic drawing apparatus
08/09/1989CN2042420U Halving elliptic board
08/09/1989CN2042419U Pens hanging board
08/09/1989CN2042418U Colour distinguishing device for multi-colour pen
08/09/1989CN2042416U Multi-function compass
08/08/1989US4854762 Disposable marker and adapter for pen-driven integrator
08/08/1989US4854048 Template for driver's dailey log book
08/02/1989CN2042022U Ellipse rule
08/02/1989CN2042020U Segment divider
08/02/1989CN2042019U Multipurpose drawing rule
08/01/1989US4853714 Automatic pen type sensor for graphic recorder
07/1989
07/26/1989CN2041629U Regular equal measuring ruler
07/25/1989US4851656 Method and apparatus for enhancing optical photoplotter accuracy
07/18/1989US4849771 Plotter pen presence and type identification system
07/12/1989CN2040854U Template made of paper and template
07/12/1989CN2040853U Healthful reading and writing board for student
07/05/1989CN2040443U Automatic adhesive tape cutter
07/04/1989US4844317 Position transducer for use with a printer or plotter
06/1989
06/28/1989EP0322307A1 Process and device for changing the writing instrument in a drawing machine
06/28/1989CN2040037U Multi-purpose set square with trigonometric function
06/21/1989CN2039633U Simple and convenient intelligence drawing instrument
06/21/1989CN2039632U Five-use form ruler
06/21/1989CN2039631U Pocket five-use word stenographic device
06/20/1989US4841316 Photohead system for positioning an aperture wheel and method of making an aperture disc
06/15/1989WO1989005492A1 Pen tip position variation detection
06/15/1989WO1989005210A1 Apparatus for changing a sensing device
06/15/1989DE3839803A1 Method and apparatus for processing surfaces with an X-Y drive
06/14/1989EP0320328A1 Recorder with a support for a sheet having an angular profile
06/14/1989EP0320316A2 Pen tip position variation detection
06/14/1989CN2039139U Iron clip-like book-rest capable of being used as scale
06/14/1989CN2039134U Office stationery case with pen ink-drawer
06/14/1989CN2039133U Multi-functional stationery case for penmanship
06/13/1989US4838792 One letter alphabet (OLA)
06/13/1989US4837939 Template for marking or cutting a shaped corner on a workpiece
06/13/1989US4837938 Scale balancing device in drawing machine
06/07/1989CN2038846U Multifunctional divider
06/07/1989CN2038734U Pencil box with eyesight protective function
06/06/1989US4837709 Recording apparatus with a function of determining recording direction of explanatory characters for graph
06/06/1989US4836783 Activity kit
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