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Class Information
Number: 33/427
Name: Geometrical instruments > Straightedge type > Square and sliding nonpivotal straightedge(s)
Description: Subject matter wherein the straightedge can be adjusted along a straight line on the square.










Sub-classes under this class:

Class Number Class Name Patents
33/428 Straightedge bisects right angle of square (i.e., centering square) 5


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8256125 Sliding square for tape measure Sep. 4, 2012
8028429 Apparatus for hanging objects Oct. 4, 2011
8015719 Electricians square Sep. 13, 2011
7954249 E-Z riser stair guide Jun. 7, 2011
7861428 Push stick with slide-out ruler Jan. 4, 2011
7788816 GPS coordinate transformer Sep. 7, 2010
7748420 Dadoing system Jul. 6, 2010
7627955 Stringer guide template Dec. 8, 2009
7587838 Framing rafter square attachment Sep. 15, 2009
7337550 Combination square Mar. 4, 2008
7219440 Lay-out tool and assembly May. 22, 2007
7174650 Sliding ruler square Feb. 13, 2007
7020978 Adjustable position tool guide Apr. 4, 2006
6931735 Window treatment hanging tool Aug. 23, 2005
6920735 Block positioning tool Jul. 26, 2005
6904689 Guide device Jun. 14, 2005
6769190 Adjustable viewing frame Aug. 3, 2004
6691422 Photographic cropping method and device Feb. 17, 2004
6604296 Framing speedsquare attachment Aug. 12, 2003
6591511 Framing square Jul. 15, 2003
6553677 Combination square Apr. 29, 2003
6421927 Measuring tool Jul. 23, 2002
6134797 Device and method to define angles on a workpiece Oct. 24, 2000
6119354 Trammel adaptor for a square head Sep. 19, 2000
6105266 Carpenter's roof pitch measuring device Aug. 22, 2000
6101729 Power saw guide Aug. 15, 2000
5915808 Power saw guide kit Jun. 29, 1999
5832618 Combination level and T-square Nov. 10, 1998
5813126 Speed square extension bar and saw guide Sep. 29, 1998
5778547 Electronic combination square Jul. 14, 1998
5471760 Picture hook locator Dec. 5, 1995
5459937 Mat board cutting guide Oct. 24, 1995
5410816 Tile, angle-cutting gauge May. 2, 1995
5361508 Tile, angle-cutting gauge Nov. 8, 1994
5339530 Hand level instrument with composite metal and plastic body Aug. 23, 1994
5325899 Router fixture Jul. 5, 1994
5276973 Combination square, height/width gage Jan. 11, 1994
RE34374 Adjustable template device for framing and cutting sheet materials Sep. 14, 1993
5133135 Angle gauge Jul. 28, 1992
5131164 Indexing apparatus for aligning cutouts Jul. 21, 1992
5062213 Construction square Nov. 5, 1991
5052454 Guide system for routers Oct. 1, 1991
4967482 Support bracket applicable to measuring tools Nov. 6, 1990
4936176 Mat cutter alignment and squaring tool Jun. 26, 1990
4914825 Squaring tool Apr. 10, 1990
4882846 Stair building template and method of use Nov. 28, 1989
4854049 Magnetic cropper Aug. 8, 1989
4831739 Adjustable template device for framing and cutting sheet materials May. 23, 1989
4761890 Adjustable carpenters measuring tool Aug. 9, 1988
4744152 Tool for measuring angles on various articles May. 17, 1988

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