Patent · US Expired

Timepiece with calendar

US4632569A · kind A · utility

8Cited by
2References
19Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 13, 1985
Grant dateDec 30, 1986
Priority date—
Expiry dateDec 13, 2005

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG04B19/241
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

The timepiece includes in addition to the hours and minutes hands a calendar mechanism comprising at least one date ring on which is placed an index. The dial includes an annular zone of transparent material through which said ring appears. In a preferred version of the invention the data indications are borne by one of the surfaces of the transparent zone. If the colors of such indications and of the ring are the same and the color of the index different from that of the indications all indications except one will be concealed--that behind which is found the index.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.