Card – picture – or sign exhibiting – Calendars
Patent
1974-12-26
1976-06-15
Wolff, John H.
Card, picture, or sign exhibiting
Calendars
116134, 40 64R, G09F 1106
Patent
active
039628086
ABSTRACT:
The embodiment of the invention disclosed herein is directed to a checklist device for providing an indication of tasks to be performed and tasks already performed. The checklist device includes a housing having a first receptacle therein for receiving an indicia or information bearing sheet. A second receptacle is formed in the housing and provides for the storage of drawing or other indicia-bearing sheets to be interchanged with the indicia-bearing sheet in the first receptacle. A windowed panel is secured to the housing and provides a plurality of transparent, discrete viewing areas. The indicia on the indicia-bearing sheet within the first receptacle are in registry with the transparent windows, and a plurality of groups of toggles are secured to the window panel with one group of toggles positioned in relation to one or more of the viewing areas. Each of the toggles has two positions, one position for covering selected indicia on the indicia-bearing sheet while in registry with the transparent window and another position for uncovering the selected indicia.
REFERENCES:
patent: 1659691 (1928-02-01), Kingman
patent: 1683358 (1928-09-01), Kingman
patent: 1990020 (1935-02-01), Blackwood
patent: 3162174 (1964-12-01), Whyte
patent: 3345766 (1967-10-01), Timlin
patent: 3485204 (1969-12-01), Christman
patent: 3564731 (1971-02-01), Weller
Mueller Theodore H.
Ryder Francis E.
Ryder International Corporation
Wolff John H.
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