Multi-task protractor
US7188427B2 · kind B2 · utility
16Cited by
34References
13Claims
0Family size
Inventor
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Mar 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/563
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A multi-task protractor apparatus having the capabilities of a rotating protractor, adjustable triangle, ruler, miniature leveler, framing square and roof angle finder is disclosed. The multi-task protractor accurately measures angles and slopes and provides two straight edges for constructing angles and triangles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.