The invention claimed by the 7,397,731 patent is pretty cool. It is a “perpetual day reminder calendar.”
The patent was prosecuted by the inventors and it is not surprising that the claims are written in some sort of modified Jepson language. Claim 1 reads as follows:
1. A perpetual day reminder calendar for illustrating day, date and month information, including:
a) a set of day indicating plates with day indica; b) a set of month indicating plates with month indica; c) a set of date indicating cubes with date indica; d) a display stand with locating guides in one of three possible configurations, top holding, center holding or bottom holding;
the improvement wherein said day indicating plates and said month indicating plates identically shaped to fit around said date indicating cubes in a manner providing an interlocking of, said plates and cubes and the shielding of unneeded indica allowing only the needed day, date and month indica to be viewed and the interlocking pieces forming a calendar stack having a unique locating interaction feature with said display stand whereby the perpetual day reminder calendar can be easily manipulated for the sequential displaying of day, date and month indica.