| Patents for B43L 7 - Straightedges (3,964) |
|---|
| 07/11/1995 | US5430947 Attachment for T-square for use with writing implement |
| 06/27/1995 | US5426859 Measuring and drawing instrument |
| 06/14/1995 | EP0657307A1 Measuring and drawing instrument |
| 05/31/1995 | CN2199061Y Multipurpose vision protecting ruler |
| 05/30/1995 | US5419054 For drawing and alignment purposes |
| 05/16/1995 | US5414938 For indicating a desired angle |
| 04/26/1995 | CN2195449Y Multi-fucntion combined ruler |
| 04/19/1995 | CN2194819Y Multipurpose rolling ruler |
| 03/22/1995 | CN2192475Y Ruler |
| 03/09/1995 | DE3490067C2 Marking tool (scriber) for squared timber commonly used in the building trade |
| 03/08/1995 | CN2191106Y Scale with multiple proportion |
| 03/08/1995 | CN2191101Y Movable multipurpose scale |
| 03/01/1995 | CN2190567Y Evenly-dividing rule |
| 02/28/1995 | US5392525 Drawing instrument |
| 02/21/1995 | US5390426 Tape measure clip |
| 02/14/1995 | US5388339 Tri-square protractor |
| 01/31/1995 | US5384967 Collapsible rafter square |
| 01/04/1995 | CN2186667Y Writing brush straightedge |
| 01/03/1995 | US5377418 T-square, and methods of construction and utilizing same |
| 12/13/1994 | US5371952 Drafting machine |
| 12/07/1994 | CN2184570Y Ruler pad |
| 11/30/1994 | CN2183897Y Compasses combined with ruler |
| 11/23/1994 | CN2183273Y Multi-purpose ruler |
| 11/23/1994 | CN2183271Y Drawing ruler |
| 11/16/1994 | CN2182744Y Bridge like ruler for drawing purpose |
| 11/09/1994 | CN2182074Y Anti-sliding folding T-square |
| 10/26/1994 | CN2180481Y Angle rule for drawing |
| 10/19/1994 | CN2179830Y Multi-functional teaching ruler |
| 10/14/1994 | CA2091199A1 Straight edge coil cutter |
| 10/05/1994 | CN2178637Y Combined trianglar rule with multi-angle |
| 10/05/1994 | CN2178636Y Multifunction rule |
| 09/27/1994 | US5349758 Device for use in laying out pitch angles on a rafter |
| 09/21/1994 | CN2177594Y Pen for writing dotted line or line of dashes |
| 08/24/1994 | CN2175113Y Folding multi-function ruler for drawing |
| 08/23/1994 | US5340229 Combined multi-hole punch and ruler |
| 08/17/1994 | CN2174340Y Drawing ruler |
| 08/10/1994 | CN2173702Y Book holder with measuring rule function |
| 08/03/1994 | CN2173170Y Multi-function active T-square |
| 07/20/1994 | CN2172211Y Adjustable T-square |
| 07/13/1994 | CN2171498Y Multifunction geometric ruler |
| 07/13/1994 | CN2171497Y Multipurpose plane drawing line ruler |
| 07/07/1994 | WO1994015301A1 Guide apparatus for facilitating calculations |
| 06/22/1994 | CN2169553Y 多功能尺 Multifunction foot |
| 06/15/1994 | CN2168728Y Drawing head |
| 06/08/1994 | CN2167858Y Multi-function drawing ruler |
| 06/01/1994 | CN2166977Y Simple drawing device |
| 05/25/1994 | CN2166014Y Convenient multi-function compasses |
| 05/25/1994 | CN2166012Y Multi-function T-square |
| 05/11/1994 | WO1994009998A1 Woodworking square having multiple uses |
| 05/06/1994 | CA2082192A1 Drawing instrument |
| 05/05/1994 | DE4309503A1 Pair of compasses geodetical triangle - has versatile circle markings by holes of 2 mm dia. in geodetical triangle |
| 02/23/1994 | CN2157045Y Circle drawing instrument |
| 02/16/1994 | CN2156049Y All-function mapper |
| 02/16/1994 | CN2156046Y Multi-purpose pupil rule |
| 02/16/1994 | CN2156045Y Angle drawing rule |
| 02/16/1994 | CN2156044Y Multi-function right angle rule |
| 01/26/1994 | CN2154179Y Composite ruler |
| 01/26/1994 | CN2154175Y Slide multifunction teaching ruler |
| 01/19/1994 | CN2153474Y Scale for drawing, viewfinding and measuring |
| 01/19/1994 | CN2153473Y Simple rule capable of circumference dividing equally |
| 01/19/1994 | CN2153472Y U shape multifunctional adjustable ruler |
| 01/19/1994 | CN2153471Y Combined teaching ruler |
| 01/12/1994 | CN2152684Y T-square having forced positioning function |
| 01/12/1994 | CN2152683Y Multipurpose ruler for drawing table quickly and measuring angle |
| 01/12/1994 | CN2152414Y Clothing scale |
| 01/05/1994 | CN2152261Y Three purpose straightedge |
| 12/29/1993 | CN2151017Y Multifunctional rolling ruler |
| 12/29/1993 | CN2151016Y Multifunctional assembled template |
| 12/29/1993 | CN2151015Y 多用角尺 Multi Square |
| 12/22/1993 | CN2150067Y Direct-reading ruler |
| 12/22/1993 | CN2150066Y Multi-function book-pressing ruler |
| 12/22/1993 | CN2150065Y Ruler for quick making list |
| 12/15/1993 | CN1079434A U-shaped multifunctional adjustable rule |
| 12/14/1993 | US5269066 Carpenters level and square |
| 11/24/1993 | CN2147120Y Multi-function composite rule |
| 11/24/1993 | CN2147119Y Multi-function drawing rule |
| 11/03/1993 | CN2145119Y Stright line ruler and its line drawing pen clip apparatus |
| 10/27/1993 | CN2144585Y T-square with rotating sliding rule |
| 10/20/1993 | CN2144059Y Frame type drawing rule |
| 10/19/1993 | US5253426 Multi-purpose square |
| 09/15/1993 | CN2142074Y Drawing ruler for dotting |
| 09/15/1993 | CN2142073Y Folding multi-function T-square |
| 09/14/1993 | USRE34374 Adjustable template device for framing and cutting sheet materials |
| 09/08/1993 | CN2141771Y Multipurpose ruler |
| 08/31/1993 | US5240338 Multifunctional drawing and writing instrument |
| 08/31/1993 | US5239762 Layout tool |
| 08/18/1993 | CN2140510Y Universal-purpose angle ruler |
| 08/18/1993 | CN2140306Y Slide-proof locating mechanism of parallel rule |
| 08/10/1993 | US5233715 Combination tool assembly for graphic art |
| 07/28/1993 | CN2139064Y Multipurpose terrestrial magnetic positioning plane straight line ruler |
| 07/21/1993 | CN2138575Y Standard line ruler |
| 07/21/1993 | CA2059721A1 Stave-drawing tool |
| 07/13/1993 | US5226238 Infinite square |
| 07/07/1993 | CN2137604Y Multipurpose quick drawing ruler |
| 06/30/1993 | CN2137206Y Three-in-one ruler |
| 06/23/1993 | CN2136747Y Studying straightedge |
| 06/16/1993 | CN2136145Y 墨线尺 Ink line ruler |
| 06/16/1993 | CN2136144Y Multipurpose check-drawing ruler |
| 06/09/1993 | CN2135473Y Mechanical step-by-step rule |
| 06/09/1993 | CN2135472Y Drawing rule |