| Patents for B43L 11 - Non-circular-curve-drawing instruments (856) |
|---|
| 02/25/1986 | US4571836 Drafting instrument for tracing ellipses and other curves |
| 02/18/1986 | US4570344 Ellipsograph |
| 02/04/1986 | US4567662 Device for drawing ellipses |
| 01/28/1986 | US4566195 Magnetic drawing toy |
| 01/22/1986 | CN85201540U Multipurpose compass capable of drawing ellipse |
| 01/14/1986 | US4563819 Ellipsograph capable of drawing dotted line |
| 12/20/1985 | CN85200874U Curve-drawing compasses |
| 09/11/1984 | CA1174042A1 Drawing apparatus |
| 06/13/1984 | EP0110727A2 Machine for drawing or cutting ellipse |
| 05/29/1984 | US4451164 Dispensing container |
| 05/22/1984 | US4449301 On a recording surface |
| 05/15/1984 | US4447954 Ellipsograph |
| 05/01/1984 | US4445275 Drawing assembly |
| 04/10/1984 | US4441256 Manipulator for creating a multiplicity of varied line designs |
| 10/04/1983 | US4407074 Apparatus for cutting and/or scribing circles and ovals |
| 08/04/1983 | WO1983002588A1 Compass for drawing ellipses |
| 07/05/1983 | US4391045 Drawing instrument or apparatus |
| 06/01/1983 | EP0080316A2 Scribing device for forming arcuate figures |
| 01/25/1983 | US4369579 Device for drawing a pattern on a support, particularly for use as a toy |
| 11/02/1982 | US4356633 Ellipsograph |
| 06/09/1982 | EP0053573A1 Colour applicator |
| 06/08/1982 | CA1125004A1 Pendulum drawing, sculpturing device with a tiltable working surface |
| 06/02/1982 | EP0052620A1 Method to draw curves with two stepper motor driven wheels and a pencil |
| 06/02/1982 | EP0052613A1 Protactor for the measuring of solid angles to be used with ellipse drawing pattern sets |
| 04/27/1982 | CA1122403A1 Instrument with curve drawing guides |
| 12/10/1981 | WO1981003561A1 Method to draw curves with two stepper motor driven wheels and a pencil |
| 12/10/1981 | WO1981003464A1 Protractor for the measuring of solid angles to be used with ellipse drawing pattern sets |
| 09/30/1981 | EP0036732A1 Drawing apparatus |
| 05/26/1981 | CA1101661A1 Apparatus for tracing ellipses |
| 01/13/1981 | US4244106 Device for describing an ellipse |
| 10/07/1980 | US4226022 Ellipsograph |
| 08/05/1980 | US4215479 Cam driven curve tracking apparatus |
| 05/27/1980 | US4204327 Ellipse compass |
| 04/29/1980 | US4199868 Amusement device for tracing geometrical figures |
| 04/29/1980 | US4199867 Harmonograph |
| 03/25/1980 | US4194292 Drawing instrument |
| 03/11/1980 | US4192072 Pendulum device |
| 01/08/1980 | US4182043 Drawing instrument for an ellipse |
| 11/20/1979 | US4174572 Drafting instrument |
| 10/16/1979 | US4170824 Universal compass |
| 10/02/1979 | US4169315 Ellipsograph |
| 09/11/1979 | CA1062000A1 Instrument for drawing circles and ellipses |
| 09/04/1979 | US4166320 Apparatus for tracing ellipses |
| 07/31/1979 | US4162577 Pendulum drawing machine |
| 07/03/1979 | CA1057499A1 Drawing doll |
| 04/24/1979 | US4150487 Instrument for tracing curved figures particularly ellipses |
| 04/10/1979 | US4148144 Oval compass |
| 12/05/1978 | US4127963 Toy drawing doll |
| 10/03/1978 | US4117598 Drawing instrument or apparatus |
| 09/20/1977 | US4048724 Ellipsograph |
| 09/06/1977 | US4045875 Ellipsograph drafting apparatus |
| 05/24/1977 | US4024641 Instrument for drawing geometric figures |
| 03/29/1977 | US4014101 Ellipse drawing instrument |
| 03/08/1977 | US4010546 Ellipse drawing instrument |
| 08/31/1976 | US3977085 Pendulum toy |
| 04/06/1976 | US3947968 Device for drawing ellipses |