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Class Information
Number: 33/429
Name: Geometrical instruments > Straightedge type > Square and fixed straightedge
Description: Subject matter comprising two straightedges connected to each other at angle of 90° and at least one other straightedge is immovably attached to the other two straightedges.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7398601 |
Carpenter's pitch square |
Jul. 15, 2008 |
| 7350517 |
Tile saw guide apparatus |
Apr. 1, 2008 |
| 7305773 |
Hand tool |
Dec. 11, 2007 |
| 7299559 |
Construction layout and angle measurement tool |
Nov. 27, 2007 |
| 7266899 |
Speed level |
Sep. 11, 2007 |
| 7222435 |
Self measuring workpiece |
May. 29, 2007 |
| 7089679 |
Measuring apparatus and method therefor |
Aug. 15, 2006 |
| 7051446 |
Construction layout and angle measurement tool |
May. 30, 2006 |
| 6920735 |
Block positioning tool |
Jul. 26, 2005 |
| 6901680 |
System for spacing flutes on a workpiece |
Jun. 7, 2005 |
| 6886268 |
Siding installation tool and method of installing siding |
May. 3, 2005 |
| 6868616 |
Builder's measuring and marking tool |
Mar. 22, 2005 |
| 6758016 |
Adjustable support for steps |
Jul. 6, 2004 |
| 6725556 |
Rafter tool and method |
Apr. 27, 2004 |
| 6688014 |
Builder's measuring and marking tool |
Feb. 10, 2004 |
| 6629372 |
Modified square |
Oct. 7, 2003 |
| 6578278 |
Saddle protractor |
Jun. 17, 2003 |
| 6513257 |
Method and apparatus for determining scale in photographic images |
Feb. 4, 2003 |
| 6442856 |
Extendable tool for use marking angular lines |
Sep. 3, 2002 |
| 6408529 |
Multi-purpose framing square |
Jun. 25, 2002 |
| 6341427 |
Window casing installation tool |
Jan. 29, 2002 |
| 6317993 |
Pipe flange square and method |
Nov. 20, 2001 |
| 6289594 |
Drywall marking and scoring guide |
Sep. 18, 2001 |
| 6138726 |
Router guide milling apparatus and method |
Oct. 31, 2000 |
| 5836198 |
Combination square and bending tool |
Nov. 17, 1998 |
| 5749154 |
Bull nose corner marking apparatus |
May. 12, 1998 |
| 5727325 |
Multipurpose square |
Mar. 17, 1998 |
| 5720114 |
Tool for positioning of vinyl corner posts |
Feb. 24, 1998 |
| 5704263 |
Saw guide apparatus and method |
Jan. 6, 1998 |
| 5396710 |
Carpentry building tool and method of using same |
Mar. 14, 1995 |
| 5349758 |
Woodworking square having multiple uses |
Sep. 27, 1994 |
| 5325899 |
Router fixture |
Jul. 5, 1994 |
| 5253426 |
Multi-purpose square |
Oct. 19, 1993 |
| 5170568 |
Roofing speed square and method of use |
Dec. 15, 1992 |
| 5103570 |
Square relief device |
Apr. 14, 1992 |
| 5052454 |
Guide system for routers |
Oct. 1, 1991 |
| 4653194 |
Composite-type ruler |
Mar. 31, 1987 |
| 4574492 |
Combination layout tool and square |
Mar. 11, 1986 |
| 4506451 |
Multi-functional square and angle marking tool having extendable stops |
Mar. 26, 1985 |
| 4262428 |
Lettering scale |
Apr. 21, 1981 |
| 4228594 |
Layout tool for locating holes on structural steel |
Oct. 21, 1980 |
| 4128030 |
Cutting guide square |
Dec. 5, 1978 |
| 4028976 |
Cutting tool guidance system |
Jun. 14, 1977 |
| 4027396 |
Marking gauge for measuring and marking French mats |
Jun. 7, 1977 |
| 3982323 |
Combination interpolator and distance divider |
Sep. 28, 1976 |
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