| Patents for B43L 9 - Circular curve-drawing or like instruments (2,793) |
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| 12/05/2001 | CN2463183Y Suction-disk teaching compasses |
| 11/21/2001 | CN2460320Y Compasses with fastening pin protection device |
| 11/14/2001 | CN2459184Y Compasses with rule |
| 11/14/2001 | CN2459183Y Compasses with press telescopic fixed pointer protector |
| 11/14/2001 | CN2459182Y Compasses capable of wantonly fixing radius of drawn circle |
| 11/06/2001 | US6311404 Retractable safety mechanism and compass and method of using the same |
| 11/01/2001 | US20010034953 Tape measure and marking apparatus |
| 10/30/2001 | US6308426 Ellipsograph |
| 10/18/2001 | US20010029679 Curve creator and duplicator |
| 10/17/2001 | CN2454148Y Multi-purpose drawing ruler and gauge |
| 10/10/2001 | CN2452750Y Inclined teeth compasses |
| 10/10/2001 | CN2452745Y Multi-purpose pen-like compasses |
| 10/03/2001 | CN2451348Y Educational compass with handle |
| 09/26/2001 | CN2449937Y Teaching compasses |
| 09/26/2001 | CN2449936Y Dualpurpose automatic compasses |
| 09/12/2001 | CN2447878Y Teaching compasses |
| 09/05/2001 | CN2445936Y Portable compasses |
| 08/22/2001 | CN2443854Y Compasses |
| 08/21/2001 | US6276030 Retractable safety mechanism and a pin or compass incorporating same |
| 08/15/2001 | CN2442848Y 多功能圆规 Multifunction Compass |
| 08/01/2001 | EP1120286A2 Device with elastic gripping action for elastically locking constituent parts of compasses |
| 07/11/2001 | CN2438588Y Teaching compasses |
| 06/27/2001 | CN2436325Y Quick drawing compasses |
| 06/20/2001 | CN2435244Y Compasses with staff |
| 06/14/2001 | WO2001042733A1 Combined measuring systems on a circular support base |
| 06/12/2001 | US6243963 Dividing rule |
| 05/01/2001 | US6223443 Pattern developing tool |
| 04/25/2001 | CN2427339Y Spring compass |
| 03/28/2001 | CN2424940Y Teaching compasses with fixing disk |
| 02/28/2001 | CN2421177Y Sucker-type compasses |
| 02/28/2001 | CN1285280A Datum point compasses |
| 02/27/2001 | CA2202950C Circumscribing apparatus |
| 02/07/2001 | CN2418016Y Compasses for teaching |
| 02/07/2001 | CN1282674A Diameter compasses |
| 02/07/2001 | CN1282673A Arm-telescopic radius compasses |
| 01/03/2001 | CN2412756Y Anti-skid chalk compasses |
| 01/02/2001 | US6167633 Curve forming device |
| 01/02/2001 | US6167628 Carpenter's gauge |
| 12/20/2000 | CN2411463Y Multipurpose drawing board |
| 12/20/2000 | CN2411129Y Two-purpose mapper |
| 11/01/2000 | CN2404095Y Round-drawing steel tape |
| 11/01/2000 | CN2403587Y Educational compasses |
| 10/11/2000 | CN2400290Y Direct-reading compasses |
| 10/11/2000 | CN2400289Y 圆规 Compasses |
| 09/27/2000 | CN2398104Y Compasses capable of anti-skidding for teaching purpose |
| 07/19/2000 | CN2388050Y Drum axle compasses |
| 07/12/2000 | CN1259437A Angle resolver |
| 06/21/2000 | CN2383698Y Vernier compasses capable of fast opening and closing |
| 06/14/2000 | CN2382570Y Anti-slip compass for teaching |
| 05/31/2000 | CN2380403Y Multipurpose compass |
| 05/10/2000 | CN2377103Y Compasses capable of holding different pens |
| 05/03/2000 | CN2376386Y Adjustable compasses |
| 04/27/2000 | WO2000023763A1 Curve forming device |
| 04/05/2000 | CN2372149Y Compasses with pen |
| 04/05/2000 | CN2372148Y Multipurpose compasses with sliding rod |
| 03/29/2000 | CN2371046Y 简易多功能圆规 Easy multifunction compass |
| 02/23/2000 | CN2365077Y Compasses for teaching |
| 02/23/2000 | CN2365076Y Multi-function compasses |
| 02/23/2000 | CN1049628C Campasses safety noodles |
| 02/16/2000 | CN2364429Y Compasses, ruler device |
| 02/10/2000 | DE19835040A1 Protective device for guiding edges of transparent drawing aid, in which guiding edges are made of more wear-resistant material than body of aid |
| 02/09/2000 | CN2362714Y Large diameter compasses for industrial use |
| 02/02/2000 | CN2361487Y Multi-purpose compasses |
| 02/02/2000 | CN2361486Y Triangle rule capable of drawing circle and ellipse |
| 01/19/2000 | CN2359135Y Convenient combined compasses |
| 01/19/2000 | CN2359134Y Multipurpose compasses |
| 01/19/2000 | CN2359133Y Multifunction compasses |
| 01/12/2000 | CN2357928Y Multifunctional teaching triangle |
| 12/29/1999 | CN2355895Y 多功能圆规 Multifunction Compass |
| 12/22/1999 | EP0885132B1 Pair of compasses with holder part |
| 12/22/1999 | CN2354771Y Compasses |
| 12/21/1999 | US6003231 Compass with adjusting means |
| 12/01/1999 | CN2351297Y Multi-function compass |
| 12/01/1999 | CN2351293Y Multi-function writing appliances and box |
| 11/24/1999 | CN2350208Y 椭圆规 Oval regulation |
| 11/23/1999 | US5987760 Circle drawing tool |
| 11/09/1999 | US5979066 Compass |
| 11/02/1999 | US5974672 Circle cutter |
| 11/02/1999 | CA2205706C Writing instrument holding clip for retractable tape measures |
| 10/20/1999 | CN2344190Y Positioing compasses |
| 10/13/1999 | CN2342989Y Multifunctional combined pen |
| 09/15/1999 | CN2338178Y Curve-drawing compass with right angle spiral guiding rail structure |
| 08/25/1999 | CN2334603Y Assembling type compasses with transversal degree scale for teaching |
| 08/18/1999 | CN2333550Y Compasses without feeding ink |
| 07/29/1999 | DE19802280A1 Compasses with integrated measuring device for drawing circles of measured radius |
| 07/14/1999 | CN2328525Y Pushing type compass |
| 07/14/1999 | CN1222453A Tetragonal diagonal line type angle and circumference divider |
| 07/07/1999 | CN2327541Y Rotary compasses |
| 07/07/1999 | CN2327540Y Multifunctional compasses |
| 06/16/1999 | CN2323980Y Protective cover for needle of compasses |
| 06/03/1999 | WO1999026795A1 Universal scale for drawing use |
| 05/26/1999 | CN2320426Y 自动圆规 Automatic compasses |
| 04/29/1999 | DE19747193A1 Set square with integrated compasses |
| 04/21/1999 | CN2314950Y Suction disc type convenient compasses |
| 04/09/1999 | CA2249860A1 Safety compass |
| 03/31/1999 | CN1212655A Pair of compasses with holder part |
| 03/10/1999 | CN2310343Y Suction type teaching demonstration compasses |
| 03/04/1999 | DE19738073A1 Compass set for folding rules |
| 02/24/1999 | CN2308514Y Device for drawing round |
| 02/02/1999 | US5864959 Drawing triangle and/or protractor, in particular for blackboard use |