Timepiece with indication of the part of the earth visible from

Details Timepiece with indication of the part of the earth visible from Timepiece with indication of the part of the earth visible from

1995-01-03

1996-04-16

Roskoski, Bernard

Horology: time measuring systems or devices

Astronomical

368 18, G04B 1926

Patent

active

055089798

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.

REFERENCES:
patent: 4671669 (1987-06-01), Graves
patent: 4740931 (1988-04-01), Graves
patent: 5086416 (1992-02-01), Dubois et al.
patent: 5155710 (1992-10-01), Roop
patent: 5245590 (1993-09-01), Galison

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