Card – picture – or sign exhibiting – Changing exhibitor – Interchangeable plate
Patent
1978-09-21
1980-11-18
Mancene, Gene
Card, picture, or sign exhibiting
Changing exhibitor
Interchangeable plate
40491, 235 70R, 283 65, G09F 1100
Patent
active
042337682
ABSTRACT:
A sheet of two contiguous detachable leaf members is folded and separated to form slide and sleeve components of the calculator. Fold lines in the sheet are formed parallel to a separation or tear line that divides on leaf member from the other leaf member. In assembling the slide calculator the leaf members can be separated before or after the folding operation. In various embodiments of the invention an information readout is provided on reverse sides of the calculator including one embodiment wherein the printed format of the slide and sleeve components is applied to one surface only of the respective leaf members. The slide component can be formed of two or more generally rectangular elongated slide segments folded into overlapping disposition, with data applied to each side of the slide segments.
REFERENCES:
patent: 1525696 (1925-02-01), Spencer
patent: 1666337 (1928-04-01), McDade
patent: 2335713 (1943-11-01), Vogel
patent: 3146942 (1964-09-01), Gaudier-Pons
patent: 3435541 (1969-04-01), Tacey
patent: 3562940 (1971-02-01), Gulbransen, Sr. et al.
Mancene Gene
Rodman Philip
Skillington G. Lee
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