| 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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| 05/11/1999 | US5902114 Method of teaching the formulation of mathematical word problems |
| 05/05/1999 | CN2317518Y Varifocus convex lens teaching aid and learning aid |
| 05/04/1999 | US5900923 Patient simulator eye dilation device |
| 04/29/1999 | DE19841248A1 Demonstration model formed as living organism |
| 04/28/1999 | CN2316687Y Myofilament sliding model teaching aid |
| 04/28/1999 | CN2316686Y Multifunctional demonstrator for rigid body precessional motion |
| 04/28/1999 | CN2316685Y Dual-purpose penduleum capable of upside-down for teaching and measuring |
| 04/28/1999 | CN2316684Y Solar system motion model device |
| 04/28/1999 | CN1215197A Imitation ophthalmology department teaching appliance |
| 04/21/1999 | CN2315609Y Analogue demonstrator for working principle of camera and slide projector |
| 04/21/1999 | CN2315608Y Wind forming analogue box |
| 04/21/1999 | CN2315607Y Multipurpose ruler and gauge for teaching |
| 04/21/1999 | CN2315606Y Geometry figure model for mathematics in primary school |
| 04/20/1999 | US5895221 Dual action double pendulum |
| 04/14/1999 | CN2314424Y Apparatus for simulating curves of in vivo media changes |
| 04/14/1999 | CN2314423Y Portable optical laboratory |
| 04/14/1999 | CN2314422Y Fascinating instrument for testing and calculating about electromagnetism |
| 04/14/1999 | CN2314421Y Multifunctional vernier calliper gauge for demonstration |
| 04/13/1999 | US5893719 Variable pathological and surgical eye model and method related thereto |
| 04/08/1999 | WO1999017265A1 Method and apparatus for surgical training and simulating surgery |
| 04/07/1999 | CN2313260Y Combined learning apparatus for middle-school physical electromagnetics |
| 04/07/1999 | CN2313259Y Teaching experiment plate of logical circuit capable of programmming on system |
| 04/07/1999 | CN2313258Y Lisaru figure-teaching demonstration instrument |
| 04/07/1999 | CN2313257Y Multifunction prism demonstration model |
| 04/07/1999 | CN2313256Y Multifunction fraction-circle demonstration model |
| 04/07/1999 | CN2313255Y Mathmatics learning-utensil box for pupils of grade 6 in primary school |
| 04/07/1999 | CN2313254Y Mathmatics Learning-utensil box for pulpils of grade 2 in primary school |
| 04/06/1999 | US5890908 Apparatus for and method of simulating the injection and volatilizing of a volatile drug |
| 04/01/1999 | DE19742834A1 Biomechanical head model |
| 03/31/1999 | CN2312495Y Amplitude modulation wave demonstration model for teaching use |
| 03/31/1999 | CN2312494Y Model for demonstration of liquid pressure |
| 03/30/1999 | US5888193 Endoscope with curved optical axis |
| 03/25/1999 | WO1999014726A1 Demonstration device modelling a living organism |
| 03/25/1999 | WO1999014725A1 Three dimensional depth illusion display |
| 03/25/1999 | WO1999013954A1 Building set |
| 03/25/1999 | CA2302682A1 Three dimensional depth illusion display |
| 03/25/1999 | CA2301516A1 Demonstration device modelling a living organism |
| 03/24/1999 | EP0902936A1 Reflected-image videoendoscopic surgical trainer |
| 03/24/1999 | CN2311816Y Separable combination skull frame |
| 03/24/1999 | CN2311815Y Electroptical displaying element periodic instrument |
| 03/24/1999 | CN2311814Y Optical spectrum demonstration instrument |
| 03/24/1999 | CN2311813Y Gas properties law instrument |
| 03/24/1999 | CN2311812Y Solid geometry modle capable of spliting at will |
| 03/23/1999 | US5885084 Cardiopulmonary resuscitation manikin |
| 03/17/1999 | CN2311038Y Multifunctional surgical practising box |
| 03/17/1999 | CN2311037Y Drain gas-collecting fixed frame device |
| 03/17/1999 | CN2311036Y Optical phenomena demonstrating board |
| 03/17/1999 | CN2311035Y Electricity and magnetism combined teaching appliance |
| 03/17/1999 | CN2311034Y Simple lever principle demonstrator |
| 03/17/1999 | CN1211021A Simulating demonstration teaching aid for mathematics |
| 03/16/1999 | US5882207 Apparatus and method for quantifying fluid delivered to a patient simulator |
| 03/16/1999 | US5882206 Virtual surgery system |
| 03/16/1999 | US5881469 Measuring and instructional ruler |
| 03/10/1999 | CN2310349Y Lens imaging imitation demonstrator |
| 03/10/1999 | CN2310348Y LC electromagnetic oscillation demonstrator |
| 03/10/1999 | CN2310347Y Linear velocity direction demonstrator |
| 03/10/1999 | CN2310346Y Fifth and sixth grade mathematics teaching appliances box for five or six years system primary school |
| 03/10/1999 | CN2310345Y Second grade mathematics teaching appliances box for five or six years system primary school |
| 03/10/1999 | CN2310344Y First grade mathematics teaching appliances box for five or six years system primary school |
| 03/10/1999 | CN2310343Y Suction type teaching demonstration compasses |
| 03/10/1999 | CN2310342Y Teaching appliances box for fourth grade of primary school |
| 03/10/1999 | CN1210320A Biological feedback operation instrument for displaying internal organs, channels, acupoints, and circles of qi and blood |
| 03/09/1999 | US5879163 On-line health education and feedback system using motivational driver profile coding and automated content fulfillment |
| 03/04/1999 | WO1999010857A1 Neck assembly for infant simulator |
| 03/04/1999 | DE19818909C1 Electrolyte apparatus for models |
| 03/04/1999 | DE19737102A1 System engineering dice |
| 03/03/1999 | CN2309165Y Elastic collision return ball |
| 03/02/1999 | US5877418 Solar powered tube rotator |
| 03/02/1999 | US5876347 Method for vascular impedance measurement |
| 02/25/1999 | DE19843150A1 Enclosed thermodynamic system containing two bodies at different temperatures |
| 02/24/1999 | CN2308929Y Analog ophthalmology teaching instrument |
| 02/23/1999 | US5873863 Vascular surgery demonstration/training kit |
| 02/23/1999 | US5873734 Biomechanical models |
| 02/23/1999 | US5873733 Training unit for the pacemaker emergency intervention system using magnetic entry code |
| 02/23/1999 | US5873732 Apparatus for training for the performance of a medical procedure |
| 02/23/1999 | US5873731 Patient drug recognition system |
| 02/23/1999 | US5873729 Mathematical triangle kit and method of use |
| 02/17/1999 | CN2308133Y Fractional demonstrator |
| 02/17/1999 | CN2308132Y Mathematics learning aid box for first-grade of five-yeart primary school |
| 02/17/1999 | CN2308131Y Mathematics learing aid box for three-grade of five-year primary school |
| 02/17/1999 | CN2308130Y Mathematics learning aid box for four-grade of five-yeart primary school |
| 02/17/1999 | CN2308129Y Mathematics learning aid box for five-grade of five-year primary school |
| 02/16/1999 | US5871361 Educational kit |
| 02/10/1999 | EP0641473B1 Methods for establishing certifiable informed consent for a medical procedure |
| 02/10/1999 | CN2307324Y Combined teaching-aid for physical mechanics of primary school |
| 02/09/1999 | US5868580 Training device for digital assessment of intraocular pressure |
| 02/09/1999 | US5868579 Apparatus and method for simulating lung sounds in a patient simulator |
| 02/09/1999 | US5868577 For teaching mathematical skills |
| 02/09/1999 | US5868575 Cooperative/interactive learning system for logic instruction |
| 02/04/1999 | WO1999005662A1 Block |
| 02/04/1999 | DE19732577A1 Multiple dice with position indicator |
| 02/04/1999 | DE19723598C1 Presentation arrangement for correlation between power plant and number of loads |
| 01/28/1999 | DE19722929C1 Endoscopic practice apparatus |
| 01/26/1999 | CA2172471C Apparatus for and method of simulating ocular optical system |
| 01/20/1999 | EP0891612A1 Model for cardiopulmonary resuscitation (cpr) training in a human |
| 01/20/1999 | CN2304962Y Demonstrator for magnet field intensity in electric solenoid |
| 01/20/1999 | CN2304961Y Multifunctional linear geometry demonstrator |
| 01/20/1999 | CN2304960Y Stationary box for pupils at third or fourth grade |
| 01/20/1999 | CN2304959Y Primary math demonstrator |
| 01/20/1999 | CN2304958Y Stationary box for math for pupils at fourth or fifth grade |