B43L 11 - Non-circular-curve-drawing instruments

Patents for B43L 11 - Non-circular-curve-drawing instruments (856)
10/1989
10/04/1989	CN2045357U 椭圆规 Oval regulation
08/1989
08/10/1989	DE3802308A1 Ellipse-drawing machine
08/09/1989	CN2042420U Halving elliptic board
08/09/1989	CN2042417U 一种椭圆规 An Elliptical regulation
08/02/1989	CN2042022U Ellipse rule
08/02/1989	CN2042021U 多用椭圆规 Multi-oval regulation
07/1989
07/19/1989	CN2041258U Compasses for drawing circular involute
07/19/1989	CN2041257U Multipurpose simple ellipsograph
07/05/1989	CN2040442U Multipurpose ellipse compasses
07/05/1989	CN2040440U Universal compasses
06/1989
06/28/1989	CN2040036U Multi-function curve compass
06/21/1989	CN2039630U Slide way type ellipsograph
06/07/1989	CN2038846U Multifunctional divider
06/06/1989	US4835874 Driven marking system for creating a plurality of varied line designs
05/1989
05/24/1989	CN2038056U Vortex motion compasses
05/03/1989	CN2036900U Conicograph
05/02/1989	US4825556 Apparatus for drawing compound designs, with offsetting, size-varying, skewing, and distorting adjustments
04/1989
04/26/1989	CN2036493U Multifunction combined gauge rule
04/19/1989	CN2036114U Projection type elipsograph
03/1989
03/29/1989	CN1031968A Elliptic curve plotting method and its plotter
03/22/1989	CN2034528U Drawing instrument for drawing ellipse
03/15/1989	CN2034125U 椭圆规 Oval regulation
03/15/1989	CN2034124U Conical curvometer
02/1989
02/23/1989	DE3808554C1 Apparatus for drawing arcs of different radii
02/23/1989	DE3726638A1 Round template system
02/22/1989	CN2032943U Multi-functional ellipse mapper
02/08/1989	CN2032147U Simple ellipse compasses
02/08/1989	CN2032146U 函数曲线尺 Function curve ruler
01/1989
01/11/1989	CN2030549U Conical section device
12/1988
12/28/1988	CN87214283U Cantilever ellipsograph
12/21/1988	CN88212795U Non-circular-curve-drawing instrument
12/13/1988	US4790222 Apparatus for cutting various forms out of a picture frame mat or the like
12/07/1988	CN87213366U Multi-functional mapper
11/1988
11/30/1988	CN88203337U Dual-purpose circle and ellipse gauge
11/23/1988	CN85106347A Intrinsic method and equipment for machining, drawing and testing cone curve
11/02/1988	CN88101135A 椭圆规 Oval regulation
11/02/1988	CN87215825U Graph plotter for archimedes spisral
10/1988
10/26/1988	CN87215145U Univesal plotting instrument
10/26/1988	CN87215005U Implement for dividing geometry anqular or arc equally
10/12/1988	CN87210973U 椭圆规 Oval regulation
10/05/1988	CN87205227U 椭圆规 Oval regulation
09/1988
09/21/1988	CN88211090U Planetary gear type ellipsograph
09/07/1988	CN88212012U Multi-purpose three leg ellipsograph
09/07/1988	CN88211015U Archimedes spiral gauge
09/07/1988	CN87211152U Multi-purpose compass
08/1988
08/31/1988	CN87214759U Multifunction curve drawing instrument
08/24/1988	CN87212546U Conical section gauge
08/10/1988	CN87216359U Combined drawing instrument
08/03/1988	CN88105367A Series arc length gauge
07/1988
07/20/1988	CN87212047U Axonometric elliptical ruler
06/1988
06/29/1988	CN87214786U Multi-functional mapper
06/29/1988	CN87210953U Multi-purpose pattern compasses
06/01/1988	CN87209228U Single-arm multifunction line drafting instrument
05/1988
05/25/1988	CN87101199A Parabola mechamism
05/04/1988	CN86106543A Universal curve drawing equipment
04/1988
04/13/1988	CN87103279A Style-a compass for drawing conic sections
04/12/1988	US4736526 Geometry template
04/07/1988	DE3631605A1 Drawing apparatus
03/1988
03/23/1988	CN87212067U Multipurpose ellipsograph with gears
03/23/1988	CN87205696U Gauge for drawing intersectional line of conical surfaces
03/16/1988	CN86105949A Versatile curve instrument
03/02/1988	CN87206667U 一种椭圆规 An Elliptical regulation
03/02/1988	CN86105261A Automatical drawing apparatus of connecting rod curve
02/1988
02/24/1988	CN86201930U Foldable ellipse instrument with cross sliding chute
01/1988
01/06/1988	CN87201455U Hyperbolograph
11/1987
11/03/1987	US4703562 Pendulum design machine
10/1987
10/21/1987	CN87204140U Cross track ellipsograph
09/1987
09/30/1987	CN86205453U Intercept type dual-purpose compasses for drawing circle and ellipse
09/09/1987	CN86205879U Automatic drawing instrument of link curves
08/1987
08/25/1987	US4688331 Ellipsograph
07/1987
07/08/1987	CN86204400U Three in one: compasses, ellipsograph and curve gauge
07/01/1987	CN85205157U Parabolic-hyperbolic drawing instrument
06/1987
06/03/1987	CN86204951U Gear generating-instrument
05/1987
05/13/1987	CN86205413U Cycloid drawing instrument
05/05/1987	US4662073 Infinitely variable drawing instrument
04/1987
04/29/1987	CN86200637U Multi purpose compasses
04/15/1987	CN86206237U Multi-functional plotter
03/1987
03/18/1987	CN86105407A Pendulum apparatus
02/1987
02/11/1987	CN86201492U Multipurpose planetary wheel ellipse compass
02/04/1987	EP0210542A1 Ellipsograph
02/04/1987	CN86202941U Multipurpose ellipsograph
01/1987
01/14/1987	CN85205819U Parabola compasses
01/13/1987	US4635369 Scribing device and method
12/1986
12/24/1986	CN86200441U Doorlike conic section curve gauge
11/1986
11/26/1986	CN86200443U "v" type universal cylinder and circular cone section curve dividers
11/26/1986	CN85201871U Multipurpose compasses
10/1986
10/22/1986	CN85202274U 椭圆规 Oval regulation
10/15/1986	CN85204967U Grade separational ellipsograph with cross slot
10/08/1986	CN85105426A Ellipsograph
09/1986
09/17/1986	CN85102014A Ellipsograph
08/1986
08/20/1986	CN85201209U Multipurpose compass
08/06/1986	CN85203648U 一种椭圆规 An Elliptical regulation
07/1986
07/15/1986	CA1207521A1 Manipulator for creating a multiplicity of varied line designs
07/09/1986	CN85202416U Model a ellipsograph
07/09/1986	CN85201456U 万能绘图仪 Universal plotter
06/1986
06/18/1986	CN85203138U Frame-type elliptic trammel with a guide rail
06/17/1986	US4594784 Apparatus for drawing an ellipse using a piece of string
06/04/1986	CN85202222U Elliptic trammel
03/1986
03/11/1986	US4574484 Patterngraph apparatus
02/1986
02/25/1986	US4571837 Ellipsograph

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