Apparatus for positioning an article on a wall
US3982839A · kind A · utility
13Cited by
4References
4Claims
0Family size
Inventor
Key dates
| Filing date | Mar 21, 1975 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Mar 21, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus which provides a reference light beam projected onto one and preferably all the walls of a room whereby a reference line is provided for positioning articles thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.