Plotting board with magnetic pivot
US7428782B1 · kind B1 · utility
2Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2006 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plotting board includes a base; a top; a pivot that connects the top and the base, the top and the base being rotatable and detachable with respect to each other, the pivot including a magnet wherein at least a portion of the pivot is disposed at a substantially central point on the top.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.