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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0397588 (1995-03-02) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 48 인용 특허 : 0 |
A device for performing levelling and transit functions is disclosed herein having an elongated member with parallel spaced-apart top and bottom flat surfaces separated by a thickened web. The web includes several cutouts exposing bubble indicators arranged in a variety of orientations and includes
A level comprising: an elongated member having a flat top surface and a bottom surface separated by a thickened web; a selected end of said member having a slotted opening exposed at said end and at said top surface so as to define an opening having 90 degrees of exposure to ambient environment; a c
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