ETERNAL MONTHLY CALENDAR Russian patent published in 2001 - IPC

FIELD: physics and mathematics; consumer goods. SUBSTANCE: calendar has body and calendar field; the latter has 49 separated members grouped in blocks in vertical and horizontal directions. Members with numeric designations have case built up of two parts connected through split joint by means of guiding slots and lugs to form space for plate bearing numeric designations applied to metal plate or to inserts. Plate may have two regions of different appearance. When this is the case, metal valves are placed inside member case and actuated by magnetic pointer. Calendar body and its calendar field are joined by means of transparent plate to form integral part. EFFECT: improved usability; simplified design; facilitated manufacture. 5 cl, 5 dwg