Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
People engine optimization
Vending machine
6-O-substituted benzoxazole and benzothiazole compounds and methods of inhibiting CSF-1R signaling
Methods for fabricating semiconductor devices
Expressive grouping for language integrated queries
Pressure washer
Method and apparatus for determining the altitude of a mobile device
  Randomly Featured Patents
Optical pickup and optical information recording apparatus using the same
Mosaic block toy
Method for coating implantable medical devices
Process for preparative and reactive dyeing of cellulose material
Fixation and stabilization of metals in contaminated soils and materials
Image data compression/decompression
Subdural strip electrode for determining epileptogenic foci
High intensity heat exchanger system
Operations center with video storage for a television program packaging and delivery system
Lead acid storage battery