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Class Information
Number: 434/279
Name: Education and demonstration > Science > Molecular model or display having discrete element representing atom or radical > Model having helical chain of elements (e.g., dna model, etc.)
Description: Subject matter including a helical string of atom representing elements, e.g., a model of a molecule of deoxyribo nucleic acid.

Patents under this class:

Patent Number Title Of Patent Date Issued
8620665 Method and system of speech evaluation Dec. 31, 2013
7419325 Tube assembling device Sep. 2, 2008
6866514 Gel electrophoresis training aid and training kit Mar. 15, 2005
6652285 System which can reversibly reproduce itself Nov. 25, 2003
6343937 Block Feb. 5, 2002
6036497 Dynamic model of the DNA molecule Mar. 14, 2000
5110297 Assembly system for demonstrating chemical structures May. 5, 1992
4892500 Versatile network of multiple spout balloons Jan. 9, 1990
4812128 Three-dimensional molecular model Mar. 14, 1989
4507089 Mechanical support module for nucleic acid Mar. 26, 1985
4378218 Protein molecule model Mar. 29, 1983
4184271 Molecular model Jan. 22, 1980

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