Framed board with writing surface

Details Framed board with writing surface Framed board with writing surface

1982-11-12

1984-12-11

Skogquist, Harland S.

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Chalkboard or equivalent means having easily erasable surface

40154, A47G 106

Patent

active

044875860

ABSTRACT:
A board intended to be used as a writing surface is provided with a frame and with a complementary border constituting one inseparable entity. The frame is continuous all around the periphery with a cross-section comprising three flanges. One flange is external to the other two, a second flange is equipped with a rim positioned behind the board and bearing against a foot formed on the complementary border, and the third flange bears against the front face of the board.

REFERENCES:
patent: 485802 (1892-11-01), Kohler
patent: 2186643 (1940-01-01), Kaplan
patent: 3150457 (1964-09-01), Thieme
patent: 3235990 (1966-02-01), Back
patent: 3363341 (1968-01-01), Glassman
patent: 3523382 (1970-08-01), Dreyer

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