Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Business
Class Information
Number: 434/90
Name: Education and demonstration > Visual art or craft, artistic adornment, or color training or demonstration > Drawing > Grid included in drawing aid or scene viewer
Description: Subject matter relating to a means for facilitating creation of a drawing or a device through which a scene or object to be drawn is viewed, the means or device including a network of lines, usually to aid in proportioning the drawing.










Patents under this class:

Patent Number Title Of Patent Date Issued
8002550 Graduated grid system used in the instruction of drawing and painting Aug. 23, 2011
7500755 Display apparatus and image processing system Mar. 10, 2009
6579099 Freehand drawing training and guiding device Jun. 17, 2003
6568938 Drawing aid May. 27, 2003
5698297 Method of applying guide markings to writing surfaces Dec. 16, 1997
5263862 Method of making a needlework graph Nov. 23, 1993
5197886 Process and display with moveable images Mar. 30, 1993
5088814 Drawing production aide Feb. 18, 1992
4973254 Educational apparatus Nov. 27, 1990
4865547 Sketching device Sep. 12, 1989
4798537 Movable grid drawing frame Jan. 17, 1989
4689017 Drawings aid for making drawings in perspective Aug. 25, 1987
4498238 Transparent perspective tracing board Feb. 12, 1985
4451519 Drawing material backing for making technical and diagrammatic drawings May. 29, 1984
4379364 Artist's freehand sketching device Apr. 12, 1983
4330951 Visualizer display device May. 25, 1982
4259784 Magnified graphical copier Apr. 7, 1981
4178709 Machine for use in pictorial drafting Dec. 18, 1979
4001941 Graphic reproduction apparatus Jan. 11, 1977











 
 
  Recently Added Patents
Method for transferring inventory between virtual universes
Touch-sensitive device and communication device
Camera system, video processing apparatus, and camera apparatus
Evaluation compiler method
Maesa japonica extracts and methods of use
Regenerative braking control to mitigate powertrain oscillation
Decoding and presentation time stamps for MPEG-4 advanced video coding
  Randomly Featured Patents
Product code memory Itakura-Saito (MIS) measure for sound recognition
Optical unit, backlight assembly with the optical unit, and display device with the backlight assembly
Plastic chuck with wrong opening preventing slider, and bag with the chuck
Heat treatment method, heat treatment apparatus and treatment system
2,3-disubstituted-4-hydroxyquinoline derivatives
System and method for focusing optics
Josephson junction device formed of oxide superconductor and process for preparing the same
Plastic bag having a handle integral with the gusset
Method of forming container with high-crystallinity sidewall and low-crystallinity base
Component operating with bulk acoustic waves, and having coupled resonators