| Patents for B43L 9 - Circular curve-drawing or like instruments (2,793) |
|---|
| 01/19/1999 | CA2136398C Measuring and drawing instrument |
| 01/13/1999 | CN1041611C Vernier type multipurpose draught instrument |
| 01/06/1999 | CN2302899Y Polar coordinate rule/divider |
| 12/23/1998 | EP0885132A1 Pair of compasses with holder part |
| 12/16/1998 | CN2300522Y Double-drawing type compasses capable of writing |
| 12/09/1998 | CN2299723Y Multi-functional ruler |
| 12/09/1998 | CN2299722Y Circular curve-drawing instrument |
| 12/02/1998 | CN2298940Y Marking gauge ball-point pen |
| 10/27/1998 | US5826466 Multi-purpose Hammer |
| 10/20/1998 | US5822871 Tool to aid in cutting circles in drywall |
| 10/14/1998 | CN2294171Y Multi-purpose compass for teaching |
| 09/30/1998 | CN2292682Y Definition compasses |
| 09/23/1998 | CN2292029Y Transparent multi-purpose drawing instrument |
| 09/16/1998 | EP0813477A4 Improved instruments for drawing circles |
| 08/12/1998 | CN2287576Y Reading arc campasses |
| 08/06/1998 | DE3990155C1 Electronically-adjustable measuring compass |
| 08/05/1998 | EP0855961A1 Combined protractor, compass, ruler and set square device |
| 07/29/1998 | CN2286678Y Multi-purpose five-angle gauge |
| 07/29/1998 | CN2286677Y Angle gauge ruler drawing board |
| 07/28/1998 | US5784791 Adjustable compass |
| 07/21/1998 | US5782007 Tool guide for facilitating movement of an implement |
| 07/15/1998 | CN2286108Y Compass pencil with free air temperature gauge and thermometer |
| 05/27/1998 | EP0844102A2 Compass with adjustement means |
| 05/07/1998 | DE19633026C1 Compass with electronic measuring device |
| 04/29/1998 | CN2280012Y Compass |
| 04/07/1998 | US5735052 Universal tape measure |
| 03/11/1998 | CN2275951Y Sucker type compass |
| 03/05/1998 | DE19635599A1 Pair of compasses |
| 01/27/1998 | US5711085 Writing instrument holding clip for retractable tape |
| 01/07/1998 | CN1169699A Improved instruments for drawing circles |
| 12/31/1997 | CN2271447Y 多功能圆规 Multifunction compass |
| 12/29/1997 | EP0813477A1 Improved instruments for drawing circles |
| 12/17/1997 | CN2270634Y Compass and ruler |
| 12/03/1997 | CN2269318Y Four-purpose campasses for drawing |
| 11/12/1997 | EP0805759A1 Compass |
| 10/29/1997 | CN2265909Y 圆规安全装置 Compasses safety device |
| 10/15/1997 | CN2264674Y Digital compasses |
| 10/15/1997 | CN2264673Y Compasses |
| 10/08/1997 | CN2264090Y 圆规 Compasses |
| 10/08/1997 | CN2264089Y Straight and compasses instrument |
| 10/01/1997 | CN2263589Y New-type circular drawing apparatus |
| 09/04/1997 | WO1997031787A1 Pair of compasses with holder part |
| 09/04/1997 | CA2248871A1 Pair of compasses with holder part |
| 08/06/1997 | CN2258821Y Convenient compasses |
| 07/09/1997 | CN2257602Y Distance measuring and angle measurement compasses |
| 06/18/1997 | CN2256378Y Two-purpose compasses for circle and ellipse |
| 06/04/1997 | CN2255365Y Dual compasses capable of being as both compasses and ellipsograph |
| 05/28/1997 | CN2254833Y Universal compass |
| 05/20/1997 | US5630278 Circle compass |
| 04/30/1997 | CN2253298Y Compasses with glass cutter |
| 04/10/1997 | WO1997012767A1 Combined protractor, compass, ruler and set square device |
| 04/10/1997 | CA2233916A1 Combined protractor, compass, ruler and set square device |
| 04/01/1997 | US5615485 Instruments for drawing circles |
| 03/26/1997 | CN2250264Y Two-purpose campasses for circle and ellipse |
| 03/26/1997 | CN1145857A Cross-section gauge for cylinder |
| 03/12/1997 | CN1144747A Compasses cabable of drawing big and small ellipses |
| 02/12/1997 | CN2247100Y Multi-function bookmark |
| 01/15/1997 | CN2245001Y Proportional divider |
| 01/15/1997 | CN2245000Y Curve gauge |
| 01/15/1997 | CN2244999Y Multipurpose combined stationery |
| 12/27/1996 | EP0710186A4 An angle divider |
| 12/27/1996 | EP0660784B1 Compass with safety pivot |
| 12/18/1996 | CN2242797Y Pencil compasses on desk |
| 10/02/1996 | CN2236409Y Trisection arc curve-drawing instrument |
| 09/17/1996 | US5555630 Compass with safety pivot |
| 09/12/1996 | WO1996027504A1 Improved instruments for drawing circles |
| 09/12/1996 | WO1996027503A1 Drawing triangle and/or protractor, in particular for blackboard use |
| 09/12/1996 | DE19503005C1 Compass for generating circles |
| 08/20/1996 | US5546663 Compass having a squat tip |
| 08/06/1996 | US5542185 Device for describing arcs |
| 08/01/1996 | WO1996022889A1 Compass |
| 07/17/1996 | CN1126971A An angle divider |
| 06/19/1996 | CN2229358Y Two-hole constant value line protractor compass |
| 06/05/1996 | DE19512624C1 Springbow compass with sheathing sleeves fixed to arms |
| 05/22/1996 | CN2227673Y Blowing-sucking cleaning vehicle |
| 05/15/1996 | CN2227030Y Easy-used compasses |
| 05/08/1996 | EP0710186A1 An angle divider |
| 04/24/1996 | EP0707983A1 Process for applying decorative elements to an arm of a pair of compasses and the pair of compasses thus decorated |
| 04/10/1996 | CN2224098Y Magnetic device for positioning center of a circle |
| 04/10/1996 | CN2224097Y Self-perpendicular compasses |
| 04/10/1996 | CN2224096Y Multi-purpose writing materials for students |
| 04/10/1996 | CN2224095Y Attracted-disk type multi-function compasses for teaching of mathematics |
| 04/03/1996 | CN2223694Y Circular curve-drawing instrument |
| 03/26/1996 | US5501019 For drawing straight lines |
| 03/12/1996 | US5497558 Multi-function drafting instrument |
| 01/31/1996 | CN2218658Y 圆规 Compasses |
| 01/31/1996 | CN2218657Y Practical protractor |
| 12/21/1995 | DE4426235A1 Compasses with fine refill guide |
| 12/20/1995 | CN2215416Y Drawing instrument for angle three equal divide |
| 12/20/1995 | CN2215412Y Compasses with function of direct reading out graduation |
| 12/13/1995 | CN2214886Y Moving compasses |
| 11/01/1995 | CN2211369Y Three point compass |
| 10/18/1995 | EP0677399A1 Device for describing arcs |
| 10/16/1995 | CA2143054A1 Device for describing arcs |
| 10/05/1995 | DE4415217A1 Spindle nut movable along spindle and fixable on it |
| 10/05/1995 | DE4411828A1 String-bow divider for compass |
| 10/04/1995 | CN2209049Y Combined scale compasses |
| 10/04/1995 | CN2209048Y Multifunctional quick drawing compasses |
| 09/27/1995 | CN2208501Y Compasses with rule |
| 07/12/1995 | CN2203229Y Compasses with three points |