Astronomical data indicating device
Patent 5208790 Issued on May 4, 1993. Estimated Expiration Date: 
April 30, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 30, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElectronic calculation watch with digital display Electronic digital display watch having solar and geographical functions Watch with indicator of lunar phases Islamic prayer calculator/clock device Apparatus for displaying astrological information Astronomical clock Moon phase display clock Patent #: 4692031 InventorAssigneeApplicationNo. 879153 filed on 04/30/1992US Classes:368/15, ASTRONOMICAL368/223, DISPLAYS OR DISPLAY DEVICE DETAILS368/229With animation (e.g., motion clock)ExaminersPrimary: Roskoski, BernardAttorney, Agent or FirmInternational ClassG04B 019/26Foreign Application Priority Data1989-05-29 JPAbstractAn astronomical data indicating device is provided with a memory for storing location data representing a location on the earth. In the present device, before calculation of astronomical data such as hour angle data of moon and moon phase data, at first hour angle data and moon phase data for Greenwich Mean Time are calculated regardless of the place where the present device is used, and then hour angle data and moon phase data at the place where the present device is used are calculated. Therefore, the calculation process is performed in a very simple manner.Field of SearchASTRONOMICALWith sun, earth, and moon display With sun and earth display With moon and earth display With tide display COMBINED WITH DISPARATE DEVICE DISPLAYS OR DISPLAY DEVICE DETAILS Including hand details only With auxiliary illumination for display With time indicia shifting means Screw Of rotatable disk type By motion or position Optical Of dial fasteners With animation (e.g., motion clock) With luminous material Including dial details only With manual activation Dial or hand Translucent Of drum or plate type For tactile time perception (e.g., braille clock) | |
