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Class Information
Number: 33/413
Name: Geometrical instruments > Straightedge type > Cord type
Description: Subject matter wherein the straightedge is a flexible line connected at one end to a support.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7594336 |
Line anchor |
Sep. 29, 2009 |
| 7513053 |
Chalk line anchoring device |
Apr. 7, 2009 |
| 7497023 |
Offset line alignment tool |
Mar. 3, 2009 |
| 7367130 |
Snap line and method |
May. 6, 2008 |
| 7299558 |
Line marker |
Nov. 27, 2007 |
| 6990741 |
Door frame alignment method system |
Jan. 31, 2006 |
| 6957495 |
Spring lock spring line chalk box |
Oct. 25, 2005 |
| 6898861 |
String line tool and sheaths therefor |
May. 31, 2005 |
| 6880261 |
Flexible and collapsible construction geometry tool |
Apr. 19, 2005 |
| 6829836 |
Material dispensing apparatus with line level |
Dec. 14, 2004 |
| 6779275 |
Cotton swab line marking means |
Aug. 24, 2004 |
| 6745485 |
Chalk line device |
Jun. 8, 2004 |
| 6622393 |
Combined string line anchor and plumb bob |
Sep. 23, 2003 |
| 6581295 |
Material dispensing apparatus with line level |
Jun. 24, 2003 |
| 6434843 |
Dual chalk line device |
Aug. 20, 2002 |
| 6421926 |
Stringline guide system |
Jul. 23, 2002 |
| 6360445 |
String line weight |
Mar. 26, 2002 |
| 6212782 |
Building line layout device |
Apr. 10, 2001 |
| 6167632 |
Dual chalk line device |
Jan. 2, 2001 |
| 6141880 |
Tool for layout of rapid development antenna array |
Nov. 7, 2000 |
| 6082014 |
Chalk line end |
Jul. 4, 2000 |
| 6016609 |
Eze glide fish tape reel assembly |
Jan. 25, 2000 |
| 5937532 |
Releasable hook |
Aug. 17, 1999 |
| 5848476 |
Manual clamping device for measuring railway track alignment and profile |
Dec. 15, 1998 |
| 5822874 |
Automatically retracting chalk line marking tool |
Oct. 20, 1998 |
| 5778546 |
Construction alignment apparatus and method |
Jul. 14, 1998 |
| 5720113 |
Apparatus designed for use as both a string line anchoring device and as a plumb bob |
Feb. 24, 1998 |
| 5704131 |
Adjustable plumb bob and line capable of automatic braking and retraction |
Jan. 6, 1998 |
| 5657548 |
Support for measuring cord |
Aug. 19, 1997 |
| 5603717 |
Method and apparatus for simplifying total hip arthroplasty |
Feb. 18, 1997 |
| 5586394 |
Self-contained plumb bob and ink line marker with line capable of automatic braking and retraction |
Dec. 24, 1996 |
| 5465494 |
Tool for marking chalk lines and plumb lines |
Nov. 14, 1995 |
| 5207000 |
Method and apparatus useful for determining an angle between a virtual optical axis and a planar surface |
May. 4, 1993 |
| 5193288 |
Apparatus and method for measuring automotive damage and disalignment |
Mar. 16, 1993 |
| 5107595 |
Accu-square marking system |
Apr. 28, 1992 |
| 5068970 |
Apparatus for facilitating roadway grade measurements |
Dec. 3, 1991 |
| 5022158 |
Wall marking layout device |
Jun. 11, 1991 |
| 4958439 |
Method and device for aligning vehicle frame |
Sep. 25, 1990 |
| 4932134 |
Adjustable foundation locating device |
Jun. 12, 1990 |
| 4921507 |
Layout device |
May. 1, 1990 |
| 4916823 |
Apparatus for facilitating roadway grade measurements |
Apr. 17, 1990 |
| 4669195 |
Guide line angle indicator |
Jun. 2, 1987 |
| 4662078 |
Construction string reel |
May. 5, 1987 |
| 4565005 |
Right-angle index device |
Jan. 21, 1986 |
| 4561189 |
Chalking line holder |
Dec. 31, 1985 |
| 4457080 |
Flexible gage clamp apparatus for supporting a flexible gage line |
Jul. 3, 1984 |
| 4442610 |
Magnetic plumb bob holder |
Apr. 17, 1984 |
| 4382340 |
Straight edge device |
May. 10, 1983 |
| 4381607 |
Carpenter's tool |
May. 3, 1983 |
| 4274203 |
Level device |
Jun. 23, 1981 |
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