Multipurpose board like article for decoration and amusement

Details Multipurpose board like article for decoration and amusement Multipurpose board like article for decoration and amusement

1987-11-25

1990-07-31

Epstein, Henry F.

Stock material or miscellaneous articles

Display in frame or transparent casing; or diorama including...

Peripheral enclosure or frame

40409, 4285424, B44C 504, B44F 110, G09F 1900

Patent

active

049449699

ABSTRACT:
A multipurpose board has a frame circumferentially supporting at least three transparent plates with segregating clearances between the transparent plates. Particles only partially fill each segregating clearance, the particles in the respective segregating clearances having different physical properties. When the board is moved, particle flow in each segregating clearance permitted by the only partial filling thereof forms varieties of wave-like combinations when movement is stopped, which are visible three dimentionally through the transparent plates.

REFERENCES:
patent: 1711701 (1929-05-01), Speck
patent: 1824229 (1931-09-01), Pevsner
patent: 3819436 (1974-06-01), Allen
patent: 3992811 (1976-11-01), Yellin
patent: 4031643 (1977-06-01), Templeton
patent: 4169323 (1979-10-01), Engel
patent: 4304803 (1981-12-01), Allaire et al.
patent: 4525945 (1985-07-01), Shultz
patent: 4686784 (1987-08-01), Smithies
patent: 4860469 (1989-08-01), Borse
patent: 4885192 (1989-12-01), Tabar

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