| 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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| 03/13/1996 | CN2222375Y Professional competition abacus |
| 01/03/1996 | CN2216689Y Abacus for blind man |
| 01/02/1996 | US5481093 Golf round timing device |
| 12/27/1995 | CN2216266Y Three-in-one abacus |
| 11/01/1995 | CN2211618Y Smooth abacus bead |
| 10/18/1995 | CN2210425Y Composition type calculator |
| 10/18/1995 | CN2210418Y Device for adjusting and positioning decimal point |
| 09/28/1995 | WO1995025993A1 Acid-base equilibrium slide-rule |
| 09/20/1995 | CN2208245Y Abacus for calculating partly |
| 09/13/1995 | CN2207598Y Counter |
| 08/24/1995 | WO1995022790A1 Combination of scales |
| 08/16/1995 | CN2205571Y Fixed bead abacus |
| 06/07/1995 | CN2200198Y Combined abacus |
| 05/31/1995 | CN2199557Y Abacus for calculation |
| 05/24/1995 | CN1028570C Electronic abacus |
| 04/26/1995 | CN2195774Y Handy digital-display abacus |
| 04/05/1995 | CN2194010Y Beads colour-changeable abacus |
| 03/29/1995 | CN2193564Y 电子算盘 Electronic abacus |
| 03/15/1995 | CN2191569Y Pencil box with abacus |
| 02/22/1995 | CN2190317Y Checking instrument for children's arithmetic works |
| 02/08/1995 | CN2189328Y Abacus with good beads and stable frame |
| 02/08/1995 | CN2189065Y Multiplication, direction digit composition board |
| 01/25/1995 | CN2188223Y 多功能便携算盘 Multifunction Portable abacus |
| 01/18/1995 | CN2187809Y Magnetic abacus |
| 12/07/1994 | CN1026923C Beads-moving electronic calculator |
| 11/09/1994 | CN2182424Y Semi-abacus with pencil-box |
| 10/26/1994 | CN2181023Y Automatic lighting abacus |
| 10/12/1994 | CN2179601Y Multifunction abacus |
| 09/21/1994 | CN2177963Y 算盘 Abacus |
| 09/07/1994 | CN2176563Y Abacus with wire controlling clearance |
| 08/02/1994 | US5334026 Manual sliding calculator |
| 07/13/1994 | CN2171886Y Change abacus |
| 06/29/1994 | CN2170538Y Arithmetic-logic unit combined with abacus |
| 06/22/1994 | CN2169874Y Binary abacus |
| 06/08/1994 | CN2168287Y 电子算盘 Electronic abacus |
| 06/08/1994 | CN2168278Y Numeral double-beads abacus |
| 05/18/1994 | CN2165472Y Stationery case type abacus |
| 05/04/1994 | CN2164066Y Abacus |
| 05/04/1994 | CN2164065Y Electronic postcode quick-locating abacus |
| 05/04/1994 | CN2164064Y Abacus |
| 04/20/1994 | CN2162669Y Multifunction numerical-change quick-read abacus |
| 04/14/1994 | WO1994008282A1 Abacus |
| 03/23/1994 | CN2159584Y Multifunctional figure-shape concordance calculator |
| 03/16/1994 | CN2159035Y Speech sound abacus |
| 02/23/1994 | CN1082728A Ten-Diagram numerals and relevant bead calculator |
| 02/15/1994 | US5286953 Carburetor jet selection tool |
| 02/09/1994 | CN2155585Y Abacus for multiple adding and subtracting |
| 02/02/1994 | CN2155041Y Pupil's two-side abacus |
| 02/02/1994 | CN2155040Y Multifunction miniature digital calculator |
| 02/02/1994 | CN2155039Y 对称算盘 Symmetrical abacus |
| 01/12/1994 | CN2153088Y Abacus capable of reverse use |
| 01/05/1994 | CN2152237Y Nine bead abacus |
| 01/04/1994 | USRE34498 Manual teaching calculator |
| 12/28/1993 | US5273320 Gardening information kit |
| 11/23/1993 | US5264682 Method and apparatus for plotting boat's position to rhumb line when tacking |
| 11/17/1993 | CN2146734Y New-type abacus with colour beads as boundary |
| 11/14/1993 | CA2095488A1 Bead calculator educational toy |
| 11/03/1993 | CN2145404Y Miniature abacus |
| 10/27/1993 | CN2144831Y Multiple system abacus |
| 10/20/1993 | CN2144323Y 一种算盘 One kind of thinking |
| 10/20/1993 | CN1022515C Colour changeable abacus |
| 10/13/1993 | CN1077295A Bead-type electronic calculator |
| 09/29/1993 | CN2142982Y Abacus for children |
| 09/15/1993 | CN1076290A Handy mechanical computing device |
| 08/25/1993 | CN2141095Y Numeral and reckoning combined abacus |
| 08/11/1993 | CN2140080Y Machinery simple computer |
| 08/04/1993 | CN2139384Y Stationery box with abacus |
| 07/14/1993 | CN2138310Y Mathematic dial with a rhombus array |
| 07/07/1993 | CN1074046A Bistable key-type colour abacus |
| 06/23/1993 | CN1073545A Calculation tool "Shiguaqi" |
| 06/09/1993 | CN2135800Y Children abacus |
| 05/19/1993 | EP0541944A2 Summation aid |
| 05/19/1993 | CN2133877Y Multipurpose magnetic abacus |
| 05/05/1993 | CN2131691Y Fast caculation training card |
| 05/05/1993 | CN1071563A Stationery box with abacus |
| 05/01/1993 | CA2054530A1 Swing circle direction analyzer |
| 04/27/1993 | US5205747 Bead calculator educational toy |
| 03/31/1993 | CN2129021Y Abacus with concave beads |
| 02/03/1993 | CN1068669A Electronic abacus |
| 12/22/1992 | US5173588 Food consumption monitor |
| 12/09/1992 | CN2124484U Movable setting display abacus |
| 12/09/1992 | CN1066927A Colour changeable abacus |
| 11/18/1992 | CN2122405U Folding thin abacus |
| 11/11/1992 | CN2121715U Position abacus |
| 11/11/1992 | CN2121714U Teaching abacus with flat beads |
| 09/23/1992 | CN2116934U Taiyi atlas |
| 09/23/1992 | CN2116933U Counter |
| 09/23/1992 | CN2116932U Abacus |
| 09/23/1992 | CN2116931U Multifunctional magnetic semicircular numeral (chinese character) abacus |
| 09/22/1992 | US5149269 Manual teaching calculator |
| 09/16/1992 | CN2116242U Accounting device with auxiliary chart and beads |
| 09/09/1992 | CN2115556U Three-beam ten-bead combined multi-purpose abacus |
| 09/02/1992 | CN2114850U Abacus |
| 08/12/1992 | CN2112855U Foldable extra thin abacus |
| 07/29/1992 | CN2111537U Combined abacus |
| 07/28/1992 | US5134692 Combined electronic calculator and abacus with deflective guide bars |
| 07/22/1992 | CN2110851U Tape measure for logarithm calculation |
| 07/08/1992 | CN2109599U Double colour sectioned colour bead position series abacus |
| 07/01/1992 | CN2108957U Folding abacus |
| 07/01/1992 | CN2108956U Abacus |