| Patents for G09D 3 - Perpetual calendars (1,171) |
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| 02/26/1992 | CN2097430U Perpetual table (hanging) calendar |
| 02/19/1992 | CN2096793U Combined perpetual calendar |
| 02/18/1992 | CA1296091C Apparatus and method of insertion of cochlear electrode assembly |
| 02/12/1992 | CN2096106U Moveable calendar |
| 12/04/1991 | CN2090090U 永久日历 Perpetual calendar |
| 12/04/1991 | CN2090089U Handkerchief calendar |
| 12/04/1991 | CN2089873U Folding hanging calenda |
| 11/13/1991 | CN2088725U Universal calendar |
| 11/13/1991 | CN2088724U Winding type decoration hanging calendar |
| 10/16/1991 | CN2086928U Plate-type wall calendar |
| 09/25/1991 | CN2085315U Multifunctional scroll painting |
| 09/04/1991 | CN2084223U Multifunctional desk calendar |
| 08/28/1991 | CN2083779U 日历尺 Calendar feet |
| 07/31/1991 | CN2082007U Perpetual calendar |
| 07/23/1991 | US5033215 Calendar apparatus |
| 07/17/1991 | CN2081123U Semiautomatic perpetual table calendar |
| 07/17/1991 | CN2081122U Cylinder utensil being calendar and time difference calculator concurrently |
| 07/10/1991 | CN2080694U Perpetual calendar |
| 07/03/1991 | CN2080204U Hundred year rotary disk calendar plate |
| 06/25/1991 | US5026095 Perpetual blind calendars series 2 |
| 06/18/1991 | US5025427 Electronic display device for displaying calendar information |
| 05/29/1991 | CN1051808A Calender stand with card turning-over unit |
| 05/08/1991 | CN2076697U Permanent hanging calendar |
| 04/24/1991 | CN2075811U Hanging calendar |
| 04/03/1991 | CN2074485U Picture-frame-type movable calendar |
| 04/03/1991 | CN2074484U Calendar circulation tracer |
| 04/02/1991 | US5003713 Multi-annual calendar |
| 03/27/1991 | CN2074042U Pocket calendar disc |
| 03/13/1991 | CN2073143U Bult-up permanent calendar |
| 03/13/1991 | CN2072904U Artistic rack of table-calendar |
| 02/27/1991 | CN2072259U 多功能电动日历装置 Multifunction device electric Calendar |
| 02/13/1991 | CN2071368U Monthly card for replacing old hanging calendar |
| 02/13/1991 | CN1049239A Calendar with year-appointing |
| 02/06/1991 | CN2070937U Adjustable calendar |
| 01/16/1991 | CN2069595U Multifunction electronic hanging calendar |
| 12/26/1990 | CN2068267U Light, dynamic automatic hanging calendar |
| 12/26/1990 | CN2068266U Electric calendar |
| 12/18/1990 | CA1277834C Multi perpetual calendars (mpc) |
| 12/12/1990 | CN2067440U Reusable hanging calendar capable of optional selecting picture |
| 12/05/1990 | CN2067015U Multifunctional long-term service desk calendar |
| 12/04/1990 | US4975061 Child's holiday calendar |
| 11/28/1990 | CN2066607U Folding loose-leaf hanging calendar |
| 10/31/1990 | EP0395067A2 Electronic display device for displaying calendar information |
| 10/17/1990 | CN2064088U 电子日历牌 Electronic calendar cards |
| 10/16/1990 | US4964072 Electronic device with calendar function |
| 09/12/1990 | CN2062098U Fast calender indicator |
| 08/22/1990 | CN2060930U Date-pointing devices for calendar |
| 08/22/1990 | CN2060929U Pernemant calendar for wall-hanging |
| 08/01/1990 | CN2060006U Permanent monthly calendar |
| 07/17/1990 | CA1271627A1 Calendar/file/memo system |
| 06/19/1990 | US4934076 Perpetual calendar |
| 04/11/1990 | EP0362519A2 Calendar and a strip of calendars attachable to a watch strap, and method of attaching the same thereto |
| 04/11/1990 | CN2055973U Combined calendar with star and moon mark |
| 04/04/1990 | CN2055627U Calendar disk for 200 years |
| 03/14/1990 | EP0358301A2 Calendar display device with pictorial symbols |
| 03/07/1990 | CN2054187U Mirror type light-matching movement picture canlendar |
| 02/21/1990 | CN1039907A Lunar calendar arithmetic unit |
| 02/07/1990 | CN2052565U 万年月历 Calendar years |
| 02/07/1990 | CN2052564U Ball monthly calendar |
| 01/31/1990 | CN2052134U Biological-clock monthly calendar for human body |
| 01/24/1990 | CN2051764U 万能日历 Universal Calendar |
| 01/17/1990 | CN1038893A Perpetual blind calendars series 2 |
| 01/10/1990 | EP0350065A1 Electronic apparatus having a calendar-display function |
| 01/10/1990 | CN2050999U Scroll type automatic calendar |
| 01/10/1990 | CN2050998U Automatic hanging-up calendar screen |
| 01/10/1990 | CN2050997U Mobile disk type solar/lunar calendar |
| 01/03/1990 | CN2050643U Rotary calendar mirror |
| 12/27/1989 | EP0136294B1 Perpetual calendar |
| 12/27/1989 | CN2050209U Cupboard type calendar |
| 10/25/1989 | EP0338294A2 Perpetual calendar |
| 10/18/1989 | CN2046257U 电动万年历 Electric calendar |
| 10/18/1989 | CN2046256U Everlasting hanging calendar with replacable pictures |
| 10/18/1989 | CN2046255U Rolling calendar |
| 10/10/1989 | US4872277 Calendar assembly |
| 10/04/1989 | CN2045527U Teaching calender for children's work and rest |
| 09/27/1989 | EP0333895A1 Calendar, in particular a desk calendar |
| 09/12/1989 | US4866611 Method for automatically reconciling entries on two copies of independently maintained electronic calendars |
| 08/22/1989 | US4858350 Meal and market calendar |
| 08/02/1989 | CN2042228U Fully-automatic pointer-type hanging calendar |
| 08/02/1989 | CN2042227U Perpetual calendar with character display |
| 07/26/1989 | CN2041844U Desk diary |
| 07/12/1989 | CN2041061U Hole rotation calendar |
| 07/12/1989 | CN2041060U Memory-aid perpetual monthly calendar |
| 06/13/1989 | US4838792 One letter alphabet (OLA) |
| 06/07/1989 | CN2039046U Permanent monthly calendar card |
| 06/01/1989 | WO1989005020A1 Perpetual calendar |
| 05/24/1989 | CN2038263U Dual calendared device displaying lunar calendar and weekly calendar |
| 05/16/1989 | US4831552 Method for concurrently displaying entries from a plurality of different electronic calendars based on interactively entered non-temporal criteria |
| 05/09/1989 | US4828290 Perpetual calendar which utilizes seven month tables and methods of constructing and using the same |
| 05/02/1989 | US4825571 Retractable calendar |
| 05/02/1989 | CA1253337A1 One letter alphabet (ola) |
| 04/12/1989 | CN2035907U Display for hanging calendar date |
| 03/29/1989 | EP0308903A2 Calendar, particularly a wall calendar |
| 03/28/1989 | US4817018 Electronic calendaring method which provides for automatic assignment of alternates in requested events |
| 03/21/1989 | US4813707 Perpetual calendar |
| 03/15/1989 | EP0306821A1 Electronic device with calendar function |
| 03/15/1989 | EP0306576A1 Electronically operated tear-off type calendar |
| 03/15/1989 | CN2034319U Perpetual calendar disc |
| 03/15/1989 | CN2034318U 磁性万年历 Magnetic Calendar |
| 03/15/1989 | CN2034013U Calendar mirro |