PERPETUAL MONTHLY CALENDAR Russian patent published in 2002 - IPC

FIELD: office engineering. SUBSTANCE: device has body having frontal panel with positioning window for selecting a month and frame, calendar field having members grouped in blocks and bearing denotations of days of month with different external design, days of week and months of year. Calendar field has 79 trihedral members of which 57 have days-of-month denotations, 7 of which have days-of-week denotations, 6 of which have months-of-year denotations and the other have no denotations. Calendar field members are grouped in blocks by means of rods, two of which are fixed in the frontal panel and five of them are fixed in the frame and are movable together with the frame relative to the frontal panel. Means for fixing the rods in the frame and frontal panel are available. Calendar field members are mounted on rods to allow rotating relative to rod axis and locking in three positions. Blocks having the calendar field members are arrangeable both in horizontal and vertical direction. EFFECT: simplified design and usage. 4 cl, 7 dwg