Perpetual calendar

Details Perpetual calendar Perpetual calendar

1978-11-13

1980-08-12

Pitrelli, John F.

Card, picture, or sign exhibiting

Calendars

Endless

40110, G09D 300, G09D 310

Patent

active

042165962

ABSTRACT:
The specification discloses a perpetual monthly calendar in which numbered belts are adjustable to bring the numbers of a year to a year window, a month belt is adjustable to bring the month (with the number of days therein) to a month window, a day belt having six horizontal rows of numbers adjustable to bring the appropriate monthly calendar to a day window with the first of the month under the day of the week on which the month of a row of the days of the week is above the day window and exposing consecutive day numbers of that month in the day window. A sixth row pointer is adjustably positioned just beyond the last day of the month exposed when next day is in the sixth row. A fifth row pointer is adjustably positioned beyond the last day of the month exposed when the next day is in the fifth row.

REFERENCES:
patent: 909290 (1909-01-01), Hall
patent: 968363 (1910-08-01), Kendig
patent: 1235442 (1917-07-01), Coppedge
patent: 1406120 (1922-02-01), Waters

Affiliated with

Also associated with

Rating

Perpetual calendar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perpetual calendar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perpetual calendar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2177628