Activity center

Details Activity center Activity center

1983-12-05

1985-10-08

Grieb, William H.

Education and demonstration

Telling time or calendar reading

434174, 434193, 434414, 434430, G09B 1912

Patent

active

045457689

ABSTRACT:
An activity center includes a plurality of polygonal frames pivotally connected together. Each frame includes an open area accessible from each side thereof and an activity device mounted therein whereby each device is accessible from either side of its respective frame. At least some of the activity devices are movable with respect to their respective frames. Particular elements of the activity center are interchangeable among the respective activity devices and the devices are generally cooperable with each other, therey enhancing the usefulness of the apparatus.

REFERENCES:
patent: 115349 (1871-05-01), Palm
patent: 466296 (1891-12-01), Clark
patent: 472419 (1892-04-01), Wind
patent: 641683 (1900-01-01), Evans
patent: 1293586 (1919-02-01), Watson
patent: 1392726 (1921-10-01), Watkins
patent: 1627211 (1927-05-01), Stewart
patent: 1973900 (1934-09-01), Hylander
patent: 2867045 (1959-01-01), Millgate
patent: 3107442 (1963-10-01), Levine
patent: 3148461 (1964-09-01), Johnson
patent: 3357116 (1967-12-01), Bazacos
patent: 3468039 (1969-09-01), Dubbert
patent: 3629960 (1971-12-01), Roush
Catalog, pp. 17, 64 and 72-73.

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