Original document(30 pages) Authorized document(29 pages) 中文版
    The present invention deals with a variety of advanced perpetual calendars, combined calendars, multiple calendars.
Application Number
申请号
89102603 Application Date
申请日
1989.04.20
Title 名称 Perpetual blind calendars series 2
Publication Number
公开号
1038893 Publication Date
公开日
1990.01.17
Approval Pub. Date 1993.03.17 Granted Pub. Date 1993.03.17
International Classification 分类号 G09D3/04
Applicant(s) Name
申请人
Ralph Haber Hoyeck
Address 地址
Inventor(s) Name 发明人 Ralph Haber Hoyeck
Attorney & Agent 代理人 FU YUAN
More information 更  多  信  息


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