John P Yackel, Age 9218 E Golden Lake Rd, Lino Lakes, MN 55014

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18 E Golden Lake Rd, Circle Pines, MN 55014

20 Golden Lake Rd, Circle Pines, MN 55014

Brooklyn Park, MN

Saint Paul, MN

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John P Yackel


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John Yackel

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Us Patents

Display Device

US Patent:
4058327, Nov 15, 1977
Nov 1, 1976
Appl. No.:
Peter Sullivan - Grand Valley, CA
John P. Yackel - Circle Pines MN
American Guidance Service, Inc. - Circle Pines MN
International Classification:
B42D 316
US Classification:
281 33
A presentation folder for the display of test or other educational material or sales or promotion material, or the like. The device is a compact unit for storing and displaying pictorial and/or typographical material printed or otherwise reproduced on pages within the device. When closed, it is in the form of a book. When opened, it assumes the form of an easel presenting stimulus material. The unit includes a one-piece molded casing having relatively stiff front and back covers formed integral with and hinged to a spine, and includes a plurality of pages of pictorial and/or typographical stimulus material loosely bound, as by spiral or other binding, or the like, for flipping from one side to the other of the easel formed when the device is opened. The device is provided with an integral storage compartment for receiving manuals, recorded tape reels and/or casettes, or the like.

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