| |
 |
|
Class Information
Number: 33/479
Name: Geometrical instruments > Straightedge type > Plural straightedges nonadjustably fixed at right angles (e.g., t-square, triangles, squares) > T-square
Description: Subject matter comprising a headpiece and a straightedge secured to the headpiece at substantially its median point at an angle of 90°, the straightedge being designed to project beyond the headpiece.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7370426 |
Cutting tee square |
May. 13, 2008 |
| 7204031 |
Telescoping T-square |
Apr. 17, 2007 |
| 6851201 |
Drywall T-square |
Feb. 8, 2005 |
| 6289594 |
Drywall marking and scoring guide |
Sep. 18, 2001 |
| 6070331 |
Scoring and marking apparatus having stabilizing wings |
Jun. 6, 2000 |
| 5832618 |
Combination level and T-square |
Nov. 10, 1998 |
| 5778547 |
Electronic combination square |
Jul. 14, 1998 |
| 5459937 |
Mat board cutting guide |
Oct. 24, 1995 |
| 5353509 |
Multi-purpose T-square and level combination tool |
Oct. 11, 1994 |
| 5245758 |
T-square attachment for carpenter's level |
Sep. 21, 1993 |
| 5182975 |
Guide for portable power saw |
Feb. 2, 1993 |
| 5103570 |
Square relief device |
Apr. 14, 1992 |
| 5062213 |
Construction square |
Nov. 5, 1991 |
| 4825559 |
Pregauging tool for a cutting table |
May. 2, 1989 |
| 4819338 |
Drawing instruments |
Apr. 11, 1989 |
| 4773163 |
Marking guide for use with framing studs |
Sep. 27, 1988 |
| 4669197 |
Drawing aid |
Jun. 2, 1987 |
| 4599805 |
Transmutable rule |
Jul. 15, 1986 |
| 4502232 |
Carpet layer's wave-form template |
Mar. 5, 1985 |
| 4494434 |
Quick positioning cut-off guide for hand power saws |
Jan. 22, 1985 |
| 4438538 |
Combination tool for carpentry |
Mar. 27, 1984 |
| 4306479 |
Portable power driven cutting tool guide |
Dec. 22, 1981 |
| 4279081 |
Wallboard T-square |
Jul. 21, 1981 |
|
|
|
