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