Resources Contact Us Home
Browse by Category: Main > Business
Class Information
Number: 434/91
Name: Education and demonstration > Visual art or craft, artistic adornment, or color training or demonstration > Drawing > Perspective
Description: Subject matter relating to a drawing which gives the impression that parts thereof are at different distances from the viewer.

Patents under this class:

Patent Number Title Of Patent Date Issued
7513773 Method and system for creating true perspective drawings and drawings created by same Apr. 7, 2009
7491060 Perspective painting aid assembly Feb. 17, 2009
7481654 Artists's grid viewing device and method of use Jan. 27, 2009
6579099 Freehand drawing training and guiding device Jun. 17, 2003
5795154 Anaglyphic drawing device Aug. 18, 1998
5580250 Drawing aid and method for drawing a scene in one place and recreating it in another Dec. 3, 1996
5217376 Drawing aid Jun. 8, 1993
5100325 Apparatus and method for creating perspective drawings Mar. 31, 1992
4689017 Drawings aid for making drawings in perspective Aug. 25, 1987
4500169 Cosmetic and observer line of sight mirror Feb. 19, 1985
4498238 Transparent perspective tracing board Feb. 12, 1985
4407655 Device for simulation of projected image Oct. 4, 1983
4008528 Drawing apparatus Feb. 22, 1977

  Recently Added Patents
Adaptive control for uncertain nonlinear multi-input multi-output systems
Treatment of celiac disease with IgA
Variants of a family 44 xyloglucanase
Dynamic report mapping apparatus to physical data source when creating report definitions for information technology service management reporting for peruse of report definition transparency a
Process and intermediates for preparing lapatinib
2,5-disubstituted piperidine orexin receptor antagonists
  Randomly Featured Patents
Eddy current test method for residual stress in non-ferromagnetic metal objects
Distribution of alumina-rich electrolyte in aluminum electrowinning cells
Composite switch
Baculovirus expression system capable of producing foreign gene proteins at high levels
Optical measurement method and apparatus which determine a condition based on quasi-elastic-interaction
Method of operating a pressure cycle operated perforating firing head and generating electricity in a subterranean well
Dispersion and slope compensating optical fiber and transmission link including same
Radio data transmission method employing several different pilot patterns, corresponding base station, mobile, system and reception method
Printer and ink cartridge attached thereto
Magnetic coupling circuit-driving system