Title: Letter perpetual monthly calendar
Application Number: 92112571 Application Date: 1992.10.31
Publication Number: 1073795 Publication Date: 1993.06.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09D3/02
Applicant(s) Name: Shang Lingqi Address: 050000
Inventor(s) Name:
Attorney & Agent:
Abstract:
     The present invention relates to a kind of monthly calendar. Its basic structure is that on the base board a number of word blocks or word pieces are installed. Those word blocks or word pieces can be regulated or exchanged, so that the monthly calendar indication can be changed. Besides, it can use the coloured marks to make sundays showily, and can use word disk to display months. Adding different additional structures, it can be made in several forms, therefore it features long service life, new form and multifunction.
Time: 21
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