Information demonstration device

Details Information demonstration device Information demonstration device

1975-11-03

1977-09-13

Skogquist, Harland S.

Supports

Pipe or cable

Extending through plate

248461, A47B 9708

Patent

active

040473090

ABSTRACT:
A portable device for demonstrating information including a receptacle with bottom and side walls. A lid is pivotably mounted on a side wall of the receptacle and a support element is mounted on the opposite edge of the lid. Leaf elements such as felt boards and peg boards are pivotably disposed at the intersection of the lid and support element.

REFERENCES:
patent: 115349 (1871-05-01), Palm
patent: 232599 (1880-09-01), Crandall
patent: 1491123 (1924-04-01), Watkins
patent: 2091260 (1937-08-01), Farkas
patent: 2397405 (1946-03-01), Burkeman
patent: 3056230 (1962-10-01), Brokaw
patent: 3669227 (1972-06-01), Alford
patent: 3680497 (1972-08-01), Sargeant
patent: 3773154 (1973-11-01), Mitchell
Flannel Board, Milton Bradley Educational Materials Catalog, 1965-1966, p. 22 only.

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