| Patents for G06C 1 - Computing aids in which the computing members form at least part of the displayed result and are manipulated directly by hand, e.g. abacus, pocket adding device (778) |
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| 12/12/2001 | CN2465219Y Caculator with protection ring |
| 12/05/2001 | CN2463869Y 算盘式电子计算器 Abacus electronic calculator |
| 11/22/2001 | US20010043664 Calorie management system |
| 11/21/2001 | CN2461035Y Abacus with calculator |
| 10/24/2001 | CN1073721C Convolution ruler |
| 10/02/2001 | CA2246441C Golf club-distance selector |
| 08/01/2001 | CN2441158Y Positioning abacus |
| 06/20/2001 | CN2435772Y Beamless directly beads-omving abacus |
| 05/30/2001 | CN2432616Y Counter with permanent calendar |
| 05/30/2001 | CN2432615Y Ten-beads abacus |
| 03/28/2001 | CN1063853C Abacus for magnet massage |
| 03/14/2001 | CN2423605Y 便携式数字算盘 Portable digital abacus |
| 03/14/2001 | CN2422852Y Stationery box with calculator |
| 02/28/2001 | CN2421675Y Add-subtract calculator |
| 02/14/2001 | CN2419616Y Calculator with two display screens |
| 01/31/2001 | CN2417493Y Calculator with hodometer |
| 01/24/2001 | CN2416527Y Abacus with bead-holes having changable colour ticking sheets |
| 01/24/2001 | CN2416526Y 多用途算盘 Multipurpose abacus |
| 01/10/2001 | CN2414439Y Caculator with pen |
| 01/10/2001 | CN2414384Y Pocket caculator with band tape |
| 01/09/2001 | US6171111 Educational device for illustrating mathematical relationships |
| 12/20/2000 | CN2411502Y Calculator with rule |
| 12/06/2000 | CN2409541Y Nine bead abacus |
| 11/08/2000 | CN2405256Y Easy to learn type abacus |
| 10/25/2000 | CN2403049Y Intelligent-devleoping simple abacus |
| 10/18/2000 | CN2401920Y Quick arithmetic unit |
| 10/04/2000 | CN2399760Y Luminous abacus |
| 09/06/2000 | CN1265480A Abacus with bright beads |
| 08/09/2000 | CN2391230Y 算盘 Abacus |
| 07/19/2000 | CN2388668Y Abcus mental arithmetic teaching magnetic teaching apparatus |
| 07/12/2000 | CN2387574Y Double cover turnover permanent calendar calculator |
| 06/28/2000 | CN2384591Y Medical fluid infusion slide rule |
| 05/10/2000 | CN2377553Y Add and subtraction operation self-checking device |
| 04/26/2000 | CN2375990Y Abacus |
| 04/19/2000 | CN2374881Y Add-and-subtract primary and secondary ruler |
| 03/29/2000 | CN2371585Y Telltale movable abacus |
| 03/22/2000 | CN2370452Y Multipurpose calculator for teaching |
| 03/01/2000 | EP0981787A1 Exchange rate table |
| 03/01/2000 | CN2366883Y Glancing-over type numeral abacus |
| 03/01/2000 | CN2366882Y Abacus for culculating changes for shop assistant |
| 02/22/2000 | US6026579 Foldable geostationary satellite antenna pointing guide and method |
| 02/16/2000 | CN2364496Y Abacus with clearing device |
| 09/16/1999 | WO1999046656A1 Exchange rate table |
| 09/01/1999 | CN2336389Y Road cross section area computing rule |
| 07/14/1999 | CN1222696A Pupil's fast calculation method and device |
| 06/30/1999 | CN2326999Y 数字式算盘 Digital abacus |
| 06/23/1999 | CN2325809Y Sine function quick calculating rule |
| 06/09/1999 | CN2323427Y 投影算盘 Projection abacus |
| 06/02/1999 | CN2322180Y Foldable abacus |
| 05/26/1999 | CN2321037Y Abacus |
| 05/05/1999 | CN2317497Y 算盘 Abacus |
| 02/17/1999 | CN2308111Y Rapid computing rule for exceeding altitude and width limit of railway loading goods |
| 02/17/1999 | CN1208186A Multifunctional plus and minus abacus |
| 01/27/1999 | CN2305701Y Displacement pupil mathematics basic training calculation board |
| 01/13/1999 | CN2304149Y Circular single-bead abacus |
| 01/13/1999 | CN1204793A Division on abacus without pithy formula method manipulated by double-hand |
| 12/23/1998 | CN2301749Y Single bead number abacus |
| 12/02/1998 | EP0881702A1 Foldable geostationary satellite antenna pointing guide and method |
| 09/16/1998 | EP0752126B1 Acid-base equilibrium slide-rule |
| 09/09/1998 | CN2290881Y Folding splitting abacus |
| 09/02/1998 | CN1191999A Slide rule for the design of reinforced concrete beam and plate |
| 07/23/1998 | DE19706352C1 Template used to calculate knot count of carpet |
| 06/23/1998 | CA2067961C Drinking cup |
| 06/09/1998 | US5761819 Combination chip counter and swizzle stick |
| 05/19/1998 | US5753896 Acid-base equilibrium slide-rule |
| 04/01/1998 | CN2277541Y 电子算盘 Electronic abacus |
| 04/01/1998 | CN2277538Y Abacus |
| 04/01/1998 | CN2277537Y New abacus |
| 03/10/1998 | US5725380 Teaching aid |
| 02/04/1998 | CN2273877Y Super thin folding abacus for pen calculation rule |
| 02/04/1998 | CN2273876Y Art abacus able to be used as game arbicle |
| 01/28/1998 | CN1171572A Abacus with bistable metachromatic keys |
| 01/21/1998 | CN1170897A 竹框算盘 Bamboo box abacus |
| 12/10/1997 | CN2270243Y Semi-bead type abacus bead |
| 11/12/1997 | CN2267474Y Multi-function mathematics calculation ruler |
| 10/22/1997 | CN2265556Y Groove abacus |
| 09/17/1997 | CN2262715Y Universal calculating box |
| 08/27/1997 | CN2261035Y Abacus |
| 08/20/1997 | CN2260339Y Usual slide rule for construction building quality |
| 08/20/1997 | CN2260338Y Quick looking-up table for tax item and tax rate |
| 08/06/1997 | CN2258999Y Enlightened disc for doing sum orally |
| 07/23/1997 | CN2258291Y 折叠式算盘 Folding abacus |
| 07/16/1997 | CN1154500A Compulating aid effected mechanically, named convolution ruler |
| 06/25/1997 | CN1152733A Method for caculating tide |
| 06/11/1997 | CN2256113Y 多用算盘 Multi abacus |
| 05/28/1997 | CN2255061Y Mechanism calculator |
| 04/30/1997 | CN2253491Y Pocket ruler for checking tilting supporting angle in mine |
| 04/23/1997 | CN2253004Y Medical infusion parameter conversion disc |
| 04/16/1997 | CN2252361Y Two-purpose double-line abacus with location and remembering |
| 04/02/1997 | CN2251160Y Hinge abacus beads |
| 03/05/1997 | CN2248886Y Ruler for calculating expansion of boiler tube |
| 02/26/1997 | CN2248352Y Calculating board for displaying patent year and prompting payment information |
| 02/19/1997 | CN2247829Y Half-bead abacus |
| 02/12/1997 | CN1142626A Abacus for magnet massage |
| 02/05/1997 | CN2246820Y Permanent-magnet teaching abacus |
| 01/29/1997 | CN2246306Y Multifunctional abacus box |
| 01/08/1997 | EP0752126A1 Acid-base equilibrium slide-rule |
| 10/16/1996 | CN2237864Y 1 adding abacus |
| 09/18/1996 | CN2235635Y Quick assembled abacus |
| 05/29/1996 | CN2228239Y Abacus |