Display device
US4201975A · kind A · utility
33Cited by
8References
17Claims
0Family size
Inventor
Key dates
| Filing date | Oct 12, 1977 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | Oct 12, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F9/688
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A highly visible display device has a base, a staff supported by the base, and a battery-operated signal device located at the top of the staff. A plurality of support poles are interconnected to form the staff, thereby enabling the display device to be erected and subsequently disassembled quickly and easily. A ballast bag is adapted to fit over the base in order to maintain the display device in place, for example against the action of high-speed vehicular traffic passing by the device. A flag may be secured to the staff to further enhance the visibility of the display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.