Patents
Sitemap › G06 - Computing; Calculating; Counting › G06C - Digital computers in which all the computation is effected mechanically › 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
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)
06/1992
06/03/1992CN2106390U Improved abacus
05/1992
05/27/1992CN2105719U Pocket abacus
05/20/1992CN2105093U Sectional number positioning mark of abacus
05/20/1992CN2104632U Measuring slide rule based on human body's x-ray photograph
04/1992
04/22/1992CN2102536U Magnetic simple abacus with marked prices
04/15/1992CN2101902U Abacus with one kind of beads
04/15/1992CN2101901U Abacus with dual beam
04/08/1992CN2101276U Bistable moving key type colour changing abacus
04/08/1992CN2100776U Multifunctional stationery case
04/01/1992CN2100128U Abacus in combination with stationery case made of plastic
03/1992
03/25/1992CN2099997U Abacus with three kinds of abacus beads
03/04/1992CN1015745B Electronic abacus
02/1992
02/26/1992CN2097419U Artistic abacus with colour beads
02/19/1992CN2096776U Position quick abacus
12/1991
12/25/1991CN2091473U Abacus with automatic zero clearing, colour-changing function
12/18/1991CN2091003U Colour-changing abacus
10/1991
10/23/1991CN2087360U Ternary (movable place sign) five-bead abacus
10/23/1991CN2087359U Calculating slip-stick
10/16/1991CN2086917U Colour-changing abacus
10/09/1991CN2086430U Right-angle position and demarcating position abacus
09/1991
09/18/1991CN2085077U Electronic digit-indicating abacus
09/11/1991CN2084629U Abacus with vernier
09/04/1991CN2084213U Chain type magnetic hanging abacus for teaching
07/1991
07/24/1991CN2081550U Five beads folding abacus
07/17/1991CN2081108U Seven beads type folding abacus
07/10/1991CN2080684U 国际算盘 Abacus International
06/1991
06/19/1991CN2079324U Hollow inlaid bow core type abacus pearl
06/19/1991CN2079323U String pearl plate
05/1991
05/29/1991CN2078021U Dual beams abacus with six balls
05/22/1991CN2077563U 数字算盘 Digital abacus
05/21/1991US5017762 Concentric rotating disc assembly
05/08/1991CN2076691U Abacus connecting beads
04/1991
04/24/1991CN2075799U Rapid calculating disk for target marking
04/16/1991US5007840 Operations processor
03/1991
03/20/1991CN2073601U Inlay type of curve core abacus bead
03/13/1991CN2073133U Vertical ten-bead abacus
03/06/1991CN2072701U 折叠算盘 Folding abacus
02/1991
02/27/1991CN2072247U Convenient positioning abacus
02/19/1991US4994656 Logic design slide rule
01/1991
01/30/1991CN2070473U Half-ball pen case abacus
01/16/1991CN2069582U Folding abacus with stationery box
01/09/1991CN2069134U Conveniet abacus
01/02/1991CN2068699U Three-beads abacus
12/1990
12/26/1990CN2068253U Improved abacus beads
12/18/1990CA1277967C Calculator for determining frequency matched set of golf clubs
12/12/1990CN2067426U Teaching abacus with steel-bead spring bead-controlling clearing device
12/05/1990CN2067004U Two frame four bead one place abacus
11/1990
11/14/1990CN2065777U Mutli-purpose abacus
11/14/1990CN1046990A 阿拉伯数字算盘 Arabic numerals abacus
10/1990
10/10/1990CN2063665U Arch abacus
10/10/1990CN2063664U Multifunction eye-catching make-up abacus
10/10/1990CN2063663U Practical abacus for student
10/03/1990CN2063252U Plane locating abacus for children
09/1990
09/12/1990CN1009585B Calculating toy for children
09/05/1990CN2061709U Calculating aid for children
09/05/1990CN2061708U Multi-purpose combination box
09/05/1990CN2061707U Multifunctional box-type abacus
08/1990
08/15/1990CN2060568U Abacus
06/1990
06/20/1990EP0373906A1 An operations processor
05/1990
05/16/1990CN2057287U Health abacus
04/1990
04/25/1990CN2056525U Mathematical calculator
04/17/1990US4916827 Guide device for making entries in trucker's log book
04/11/1990CN2055956U 符号算盘 Symbols abacus
03/1990
03/29/1990DE3832231A1 Calculating device with rods and running bodies displaceable thereon
03/28/1990CN2055267U Multi-purpose abacus with positive and negative beads
03/27/1990US4912307 Device for keeping score during a scoring game
03/14/1990CN2054546U Digit calculator for child
03/14/1990CN2054545U Distance and location-adjustable veins bead abacus
03/07/1990CN1007092B Electronic abacus
02/1990
02/28/1990CN2053765U Addition and subtraction calculating disk in 100's
02/14/1990CN2052913U Multi-function abacus
01/1990
01/31/1990CN2052133U Electronic abcus
01/24/1990CN2051752U Popular abacus
01/24/1990CN2051751U Digital displaying device for biological rhythm
12/1989
12/27/1989CN1006250B Clinical x-ray threshold photographac ruller
12/20/1989CN2049797U Ring type belt positioning abacus
12/13/1989CN2049376U Magnetic brake teaching demonstration abacus
12/06/1989CN2048990U Multifunctional foldable abacus
11/1989
11/22/1989CN2048209U Convenient abacus
11/08/1989CN2047410U Double-color beaded abacus
11/08/1989CN2047409U Digit point and bead device for fast calculation
10/1989
10/25/1989CN2046647U Abacus for children
10/25/1989CN2046646U Single-shaft abacus
10/18/1989CN1036464A Calculating toy for children
09/1989
09/13/1989CN2044359U Detachable integrate abacus
09/13/1989CN2044351U Multi-functional multitester
08/1989
08/02/1989CN2042217U Coloured-bead abacus (or three-bead abacus)
08/02/1989CN2042216U Composite abacus (also named ten-bead abacus)
07/1989
07/26/1989CN2041832U 数字式算盘 Digital abacus
07/26/1989CN2041831U Abacus
07/19/1989CN2041439U Folding type beads abacus
05/1989
05/24/1989CN2038254U Four beads abacus of binary two-colour display
04/1989
04/26/1989CN2036365U Abacus type stationery case
03/1989
03/29/1989CN2035111U Beads position device of an abacus
03/22/1989CN2034712U Slight type abacus
03/14/1989US4812124 Hexadecimal abacus
02/1989
02/15/1989CN2032741U Checking calculation apparatus
01/1989
01/18/1989CN2031124U One key multiple contact calculator
01/18/1989CN2031123U Foldable multi-functional abacus
12/1988
12/07/1988CN88212546U Abacus beads
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