Underwater viewing device
US4715837A · kind A · utility
6Cited by
4References
4Claims
0Family size
Inventor
Key dates
| Filing date | Aug 1, 1986 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An underwater viewing device that may be held in the water from a moving boat for viewing below the surface of the water. The device includes a transparent bottom with side walls secured thereto and extending upwardly therefrom, the side walls forming a water barrier totally around the bottom. One end of the bottom and corresponding side walls define a bow shape. An outwardly turned flange is located at the top of the side walls to permit one to conveniently hold the device in the water while the boat is moving, or to which a boat mounted support may be secured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.