Timepiece with indication of the part of the earth visible from the moon
US5508979A · kind A · utility
92Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1995 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Jan 3, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B19/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This timepiece is provided to indicate the phases of the earth as they would be perceived by an astronaut contemplating the heavens from the moon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.