Device for producing variable moire patterns

Details Device for producing variable moire patterns Device for producing variable moire patterns

1987-10-13

1988-12-06

Epstein, Henry F.

Stock material or miscellaneous articles

Finial or pendant type article

40330, 40427, 70456R, 428 30, A47G 2910

Patent

active

047895730

ABSTRACT:
A device for producing variable moire patterns including a housing maintaining transparent sheets in face-to-face relationship, said sheets movable relative to one another and each carrying a pattern of lines.

REFERENCES:
patent: 2133081 (1938-10-01), Colvin
patent: 2720777 (1955-10-01), Kocsi
patent: 3589045 (1971-06-01), Rakowsky
patent: 3633301 (1972-01-01), Calabuig
patent: 3643361 (1972-02-01), Eaves
patent: 4187628 (1980-02-01), Thompson
patent: 4330578 (1982-05-01), Nishihira et al.
patent: 4576839 (1986-03-01), Parren

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