Class Information
Number: 33/468
Name: Geometrical instruments > Straightedge type > Plural straightedges, relatively moveable > Single pivot > T-head with pivoted straightedge
Description: Subject matter comprising a headpiece or stock having at least one straightedge and another straightedge connected to the headpiece about an axis at substantially its median point at a 90° angle and designed to project beyond the headpiece on its straightedge side.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7204031 |
Telescoping T-square |
Apr. 17, 2007 |
| 6584698 |
Angle indicating apparatus capable of positioning at predetermined angles |
Jul. 1, 2003 |
| 6049990 |
Multifunction layout tool |
Apr. 18, 2000 |
| 5915806 |
Multi-function square |
Jun. 29, 1999 |
| 5337641 |
Woodworking machinery jig and fixture system |
Aug. 16, 1994 |
| 5205045 |
Household tile cutting gauge |
Apr. 27, 1993 |
| 4669197 |
Drawing aid |
Jun. 2, 1987 |
| 4665623 |
Illuminated drafting aid |
May. 19, 1987 |
| 4531296 |
Device for marking out workpieces |
Jul. 30, 1985 |
| 4417399 |
Device for the calculation of the characteristics of rectilinear geometric shapes |
Nov. 29, 1983 |
| 4327499 |
Drafting apparatus |
May. 4, 1982 |
| 4312133 |
T-Square |
Jan. 26, 1982 |
|
