Plastic barricade panel
US3971331A · kind A · utility
7Cited by
8References
10Claims
0Family size
Inventor
Key dates
| Filing date | Mar 1, 1974 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Mar 1, 1994 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F13/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A movable barricade for use at construction sites having supporting legs connected by rails and further having at least one of its rails formed by a panel of thermoplastic material having a flame-oxidized forward surface to which pressure sensitive adhesive material is attached and arranged for delivering a warning message, the back surface of the panel having protruding ribs formed of the same piece of material as the remainder of the panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.