| 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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| 04/16/1992 | DE4125658A1 Collapsible cube for teaching or recreation - incorporates several dice divided by diagonal cuts into two prisms |
| 04/16/1992 | DE4031719A1 Schulungsgeraet fuer die fluidtechnik Schulungsgeraet for the fluid technology |
| 04/15/1992 | CN2101926U Animal imitating mould |
| 04/15/1992 | CN2101925U Ear point display parts with luminous diode |
| 04/15/1992 | CN2101924U Plane geometry figure projection teaching aid |
| 04/15/1992 | CN2101923U Sine curve demonstrator |
| 04/15/1992 | CN1016293B Folded dual-purpose demonstrator for pulleys and shafts |
| 04/14/1992 | US5104328 Anatomical model |
| 04/09/1992 | WO1992006458A1 Training method and articles therefor |
| 04/09/1992 | CA2088919A1 Training method and articles therefor |
| 04/08/1992 | CN2101304U Human body's channels and acupointe sectional dissecting model |
| 04/08/1992 | CN2101303U Aerited human body channels and collaterals acupoints model |
| 04/08/1992 | CN2101302U Hologram acupoint region human body model |
| 04/08/1992 | CN2101301U Projection series electric meter |
| 04/08/1992 | CN2101300U Archimede's low composite demonstrator |
| 04/08/1992 | CN2101299U Simple harmonic vibration image automatic recorder |
| 04/08/1992 | CN2101298U Connecting strucsture between sections of space model |
| 04/07/1992 | US5102340 Dental teaching and practicing apparatus |
| 04/07/1992 | US5101828 Methods and apparatus for nonivasive monitoring of dynamic cardiac performance |
| 04/02/1992 | WO1992004860A1 System for simulating the physiological response of a living organism |
| 04/01/1992 | EP0477199A1 Dental hygiene instruction display. |
| 04/01/1992 | CN2100674U Demonstrating electric meter with digital display |
| 04/01/1992 | CN2100673U Electronic circuit experimental facility |
| 04/01/1992 | CN2100672U Object balance demonstrator |
| 04/01/1992 | CN1016093B Series arc length gauge |
| 03/31/1992 | US5100621 Prepackaged disposable kit with instruction booklet pages overlying test components in successive sequence |
| 03/24/1992 | US5098289 Head model for representing gnathological relationships |
| 03/19/1992 | DE4029446A1 Rectifier with two function generators for electric motor supply - enables modulating sinusoidal or square waves to be selected with carrier frequency reduced for operator training |
| 03/18/1992 | CN2099358U Magnetic induction vector intensity testmeter |
| 03/04/1992 | CN2098066U Biology dna structure demonstrating teaching aid |
| 03/04/1992 | CN2098065U Projection demonstrating electromagnetic relay |
| 02/26/1992 | EP0472365A1 Doll |
| 02/25/1992 | US5090910 Multiple three dimensional facial display system |
| 02/23/1992 | CA2048568A1 Filling assembly for doll with liquid reservoir |
| 02/22/1992 | WO1992003809A1 Formation method for mirage phenomenon |
| 02/22/1992 | CA2069963A1 Method of reproducing mirage-like phenomenon |
| 02/19/1992 | CN2096789U Electronic catheterization, sausage nursing teaching model |
| 02/19/1992 | CN2096788U Looking point recording apparatus for flat substance motion test |
| 02/19/1992 | CN2096787U Folding signal-malaria vibration image demonstrater |
| 02/12/1992 | CN2096105U Multifunctional chemical experiment combined device |
| 02/12/1992 | CN2096104U Projection teaching board |
| 02/12/1992 | CN2096103U Multifunctional teaching board |
| 02/11/1992 | US5088037 Portable rescue administration aid device |
| 02/11/1992 | US5087204 Taxidermic eye-mounting method and article |
| 02/06/1992 | DE4024505A1 Dental training model of teeth - allows drilling to be carried out with contacts providing indication of accuracy |
| 02/06/1992 | DE4023991A1 Human head model for demonstrating working of jaws |
| 02/05/1992 | EP0469413A1 Model head for the representation of gnathological relationships |
| 02/05/1992 | EP0469219A1 Didactic model for the representation of two systems of co-ordinates horizontal and equatorial |
| 01/29/1992 | CN2094779U Magnetic force line stereo distribution demonstration device |
| 01/29/1992 | CN2094778U Static electricity experiment box |
| 01/29/1992 | CN2094196U Bookend capable of growing out vegetable |
| 01/28/1992 | US5083962 Doll capable of bodily functions |
| 01/28/1992 | US5083559 Artificial respiration breathing device |
| 01/22/1992 | CN2094089U Intelligence developing instrument |
| 01/22/1992 | CN2094088U Optoelectronic number plate |
| 01/15/1992 | CN2093428U Ear acupuncture points electric model for teaching |
| 01/15/1992 | CN2093427U Electromagnetic oscillation demonstrator |
| 01/15/1992 | CN2093426U Joule law demonstrator |
| 01/15/1992 | CN2093425U Portable multifunctional plane geometry demonstrator |
| 01/14/1992 | US5080592 Variable action quincunx pinplate |
| 01/08/1992 | CN2092793U Laser holographic demonstrator |
| 01/08/1992 | CN2092792U Demonstrating model of cylinder, cylinder cone and truncated cone |
| 01/01/1992 | CN2092131U Three-phase motor demonstrator |
| 01/01/1992 | CN2092130U Archimedes principle demonstrator in contrast mode |
| 12/31/1991 | US5076793 Fractal mathematics kit |
| 12/25/1991 | CN2091480U Stomatology teaching simulating operation table |
| 12/25/1991 | CN2091479U Triangle and quadrilateral demonstrating model for schoolchild |
| 12/24/1991 | US5075881 Process for developing a statistical model to determine the workload of an aircraft pilot, model derived therefrom, apparatus for the embodiment of the said process and applications of the model |
| 12/19/1991 | DE4034416A1 Mathematical model with elements and connecting rods - has transparent element surfaces and light sources on elements enabling clear demonstration of model characteristics |
| 12/18/1991 | EP0461762A1 A method of training personnel to detect the presence of radioactive contamination |
| 12/18/1991 | CN2091016U Primary cell for teaching demonstration |
| 12/18/1991 | CN2091015U Multifunctional circuit demonstrator |
| 12/18/1991 | CN2091014U Multifunctional projection demonstrator |
| 12/11/1991 | CN2090603U Direct-insert extended circuit board |
| 12/11/1991 | CN2090562U Multifunciton experimental instrument of doing work by variable force |
| 12/11/1991 | CN2090561U Mechanics experimental box |
| 12/10/1991 | US5071354 Artificial denture-skull for dental purposes |
| 12/10/1991 | US5071353 Training device for an automatic injector |
| 12/10/1991 | US5071227 Optical filter in the form of a rectangular parallelepiped having a plurality of nonintersecting bevels |
| 12/10/1991 | US5071132 Molecular structure game |
| 12/04/1991 | CN2090111U Atmosphericd pressure changeable internal damp bvattery |
| 12/04/1991 | CN1056762A Man body blood circulation dynamic demonstrating model |
| 11/27/1991 | CN2089649U Air cushion guide program display timer |
| 11/27/1991 | CN2089648U Wave demonstration device |
| 11/26/1991 | US5067902 Multifunctional block and kit for science instruction |
| 11/26/1991 | US5067901 Simulated multimeter |
| 11/26/1991 | CA2043117A1 Accident simulating apparatus and method |
| 11/20/1991 | CN2089195U Demonstrating apparatus for super conduction suspending locking in magnetic field |
| 11/20/1991 | CN2089194U Self circulating siphon principle experiment apparatus |
| 11/20/1991 | CN2089193U Triangle and trapezium demonstrating model |
| 11/19/1991 | US5066233 Quincunx with a rearwardly movable ball-stop |
| 11/13/1991 | CN2088722U Multi-function magnetic force teaching box |
| 11/13/1991 | CN2088721U 照明电路实验板 Lighting breadboard |
| 11/13/1991 | CN2088720U Self-circulation static pressure transmission antomatic water pumping instrument |
| 11/13/1991 | CN2088719U Multi-function mechanics experiment instrument |
| 11/07/1991 | DE4100364A1 Transparent sheet of plastics film - can be folded to form cubes, pyramids etc. for teaching geometry |
| 11/06/1991 | CN2088276U Multi-functional solid rotating experimental model |
| 10/31/1991 | DE4013110A1 Ultrasound contrast agent, vaccine, diagnostic or therapeutic agent |
| 10/30/1991 | EP0454044A2 Pharmacological product containing polyelectrolyte complexes in microparticulate form and at least one substance |
| 10/30/1991 | CN2087801U Optical studying utensil for middle school |