发明名称 |
PROTRACTOR OR RULER WITH A LIGHT SOURCE |
摘要 |
<p>A measuring instrument comprising a frame and a plurality of measurement indicia. A power source is positioned inside a portion of the frame with a light source operatively connected to the power source. When a user presses down upon the frame, the light source is actuated, sending light throughout the frame and illuminating the measurement indicia, providing improved visibility for a user.</p> |
申请公布号 |
WO2004018961(A1) |
申请公布日期 |
2004.03.04 |
申请号 |
WO2003US25914 |
申请日期 |
2003.08.20 |
申请人 |
ALTERRA HOLDINGS CORPORATION |
发明人 |
CARLSON, CHRISTOPHER, ROBERT;CORNELL, ROBERT, WILLIAM;WOLF, JASON;IMHOFF, KEVIN, LEIGH |
分类号 |
G01B3/56;G01B3/04;G01D11/28;(IPC1-7):G01B3/04;B43L7/00 |
主分类号 |
G01B3/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|