| Patents for G09B 23 - Models for scientific, medical, or mathematical purposes, e.g. full-sized device for demonstration purposes (20,724) |
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| 03/23/1988 | CN87202052U Composite teaching aid for electricity |
| 03/15/1988 | US4731022 Teaching arithmetic principles |
| 03/10/1988 | WO1988001490A1 Method and artificial intraocular lens device for the phakic treatment of myopia |
| 03/10/1988 | DE3629896A1 Visualisation of metabolic processes with the aid of a haemoglobin model |
| 03/09/1988 | CN87104281A Method and artificial intraocular lens device for the phakic treatment of myopia |
| 03/09/1988 | CN87102054A Drawing model in plane, solid and analytic geometry |
| 03/09/1988 | CN86104411A Projector for primary battery |
| 03/02/1988 | CN87212098U Steroscopic solid geometry model |
| 03/02/1988 | CN87209334U Numeral projection comparator |
| 03/02/1988 | CN87204471U Analog demonstrate device for electric current, voltage and power supply |
| 02/25/1988 | DE3628068A1 Function tester for central processing system - has address and data operating fields for generating and verifying all bus signals |
| 02/24/1988 | EP0256029A1 Electronic construction bricks |
| 02/24/1988 | CN87100302A Manufacture method of flexible circuit board |
| 02/23/1988 | US4726772 Medical simulator |
| 02/23/1988 | US4726748 Apparatus for replication of blood vessels and ductal organs |
| 02/17/1988 | CN87206921U Measurement demonstration device for principle of gear |
| 02/17/1988 | CN87202516U Combined studied utensil of mechanics for middle school |
| 02/16/1988 | US4724905 Sequential hydraulic fracturing |
| 02/11/1988 | DE3626750A1 System and appliance for converting energy from an energy source into linear movement |
| 02/10/1988 | CN87103964A Simulation tester for artificial hip joint with a diagonal ball-articulation spatial seven-link assembly |
| 02/09/1988 | US4724110 Iodine-polymer inserts embedded human tissue equivalent material |
| 02/09/1988 | US4723914 Microscopic specimen |
| 02/03/1988 | CN87203654U Instructive model for teaching solid geometry |
| 01/27/1988 | EP0254325A2 Process for three-dimensional mathematical modeling of underground geologic volumes |
| 01/27/1988 | CN87209894U Demonstrator for electrostatic field to do work |
| 01/27/1988 | CN87208950U Fixed plane prefabricated frame of "geometrical object" teaching model |
| 01/27/1988 | CN87204192U Combined solid geometry teaching aid |
| 01/20/1988 | EP0253757A1 Jaw model |
| 01/20/1988 | CN87208483U H-shaped tube for demonstrating pressure derisity inside liquid |
| 01/20/1988 | CN87207030U Multifunctional intelligent geometry teaching aid |
| 01/20/1988 | CN87204248U Left hand rule and right hand rule demonstrating instrument |
| 01/14/1988 | DE3621952A1 Method and model for performing implantation and dental training procedures |
| 01/06/1988 | CN87204912U Gas mole volume testing instrument |
| 01/06/1988 | CN87201407U Weather climate three dimensional model for teaching |
| 01/06/1988 | CN87200950U Combination type solid geometric teaching model |
| 12/23/1987 | EP0250121A2 Three-dimensional modelling apparatus |
| 12/23/1987 | CN86207568U Digital-displaying electric-measuring sheet |
| 12/16/1987 | CN86208803U Digit type measuring appliance for light strength distribution |
| 12/15/1987 | US4713815 Automatic fault location system for electronic devices |
| 12/15/1987 | US4713009 Teaching apparatus and method for solving algebraic linear equations |
| 12/09/1987 | CN86207023U High brightness slide projector |
| 12/09/1987 | CN86103299A Teaching aid for the establishing the concept of reducing weight of matter by electromagnetic force |
| 12/08/1987 | US4711237 Protective sanitary barrier for CPR doll |
| 12/01/1987 | US4709996 Fluid lens |
| 11/25/1987 | EP0246340A1 Method to simulate the movements of human dummies |
| 11/24/1987 | US4708836 Process for producing an artificial cranium and a prosthetic head |
| 11/17/1987 | US4707787 Beam-activated complex-solid formation utilizing pattern-independent, coordinate-sequence construction |
| 11/10/1987 | US4705478 Superimposed transparencies used in education |
| 11/07/1987 | CN86203095U Combined teaching demonstration box of electricity |
| 11/07/1987 | CN86202184U Descriptive geometry teaching aid |
| 10/31/1987 | CN86207832U Electro-magnetic phenomenon display apparatus |
| 10/28/1987 | CN86205985U Micro-current demonstrating instrument for common education |
| 10/27/1987 | US4702704 Tetrahedral codon stereo-table |
| 10/27/1987 | US4702702 Three-dimensional model of molecular structure and a device for disassembly and reassembly of same |
| 10/27/1987 | US4702701 Multiple substructure anatomical organ model |
| 10/22/1987 | WO1987006382A1 Dummy intended for the training of first aid teams |
| 10/22/1987 | DE3613289A1 Device for illustrating the coil winding of electric motors |
| 10/22/1987 | DE3611887A1 Device for the visual representation of proper fractions by means of circular segment areas |
| 10/21/1987 | CN87200755U Combined mathematical dynamic demonstrator |
| 10/21/1987 | CN86108149A Nonlinear optical demonstrator |
| 10/20/1987 | US4701132 Dummy for car crash testing |
| 10/20/1987 | US4701131 Geometric modeling kit and method of making same |
| 10/20/1987 | US4701023 Sun simulator for simulating conditions in outer space |
| 10/14/1987 | EP0240574A1 Beam balance for the demonstration of numbers as well as operations with and relationships between numbers |
| 10/14/1987 | CN86102331A Magnetic suspended guide |
| 10/07/1987 | CN86210292U Polarized light projection apparatus |
| 10/07/1987 | CN86209874U Pendulum with two limit values |
| 09/30/1987 | EP0238862A1 Model for the simulation of oxygen consumption and carbon dioxide production |
| 09/30/1987 | EP0238636A1 Method of manufacture and implantation of corneal inlays |
| 09/29/1987 | US4696647 Electronic assembly toy |
| 09/23/1987 | CN86210684U Teaching instrument for trigonometric function |
| 09/23/1987 | CN86208205U Circular polarized light demonstrator |
| 09/16/1987 | EP0236765A2 Automatic fault location system for electronic devices |
| 09/16/1987 | CN86205515U Portable physical mechanics experimental box for student of middle school |
| 09/16/1987 | CN86204076U Demountable "geometric pattern" teaching utensil |
| 09/16/1987 | CN86200565U 'solid geometry' combination model |
| 09/15/1987 | US4693687 Apparatus for determining the acceleration of a moving object under gravity |
| 09/08/1987 | US4691556 Load-sensing faceform for crash dummy instrumentation |
| 09/02/1987 | CN86101102A Electric demonstration device for teaching models of electron cloud and atomic orbits |
| 08/27/1987 | DE3601797A1 Microprocessor training device |
| 08/19/1987 | EP0232874A2 Configuration of standard colours |
| 08/19/1987 | CN86208111U Teaching demonstrator for light reflection, refraction and polarization |
| 08/19/1987 | CN86207095U Nichol prism teaching demonstrator |
| 08/18/1987 | US4687058 Solvent enhanced fracture-assisted steamflood process |
| 08/12/1987 | EP0231808A1 A toy building element |
| 08/12/1987 | CN86204939U Optical fibre application demonstrator |
| 08/12/1987 | CN86204803U Resonance demonstrator |
| 08/05/1987 | EP0163684B1 Method and device for bringing bodies immersed in liquid to form regular structural patterns |
| 08/05/1987 | CN86204787U Demonstrator for magnetic field shielding |
| 08/05/1987 | CN86202445U Human body meridian-acupuncture point model displaying device with microcomputer |
| 08/04/1987 | US4683669 Motor element for facially animated mannequin |
| 07/30/1987 | WO1987004365A1 A toy building element with elements for providing positional information |
| 07/29/1987 | CN86201821U Combined teaching equipment for mechanics practice |
| 07/22/1987 | CN86201956U Portable electrochemical flow spectrum displaying instrument with slit |
| 07/22/1987 | CN85205224U Quantitative experimental instrument for demonstrating projectile motion and mechanical energy conservation law |
| 07/21/1987 | US4681547 Cervical exam teaching method |
| 07/21/1987 | US4680825 Pressure-sensing toothbrush holder |
| 07/15/1987 | CN86203921U Peltier effect experimental instrument |
| 07/15/1987 | CN86202372U Miltifunction experimental tuning fork for teaching |
| 07/15/1987 | CN85204962U Colour spectroscopically-synthetically demonstrating instrument |