sifting tray for use with a litter pan

Animal husbandry – Waste collector

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D 7667

Patent

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D03514897

REFERENCES:
patent: D233771 (1974-11-01), Dirck
patent: D258212 (1981-02-01), Negrete
patent: D289095 (1987-03-01), Chiodo et al.
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patent: 3716371 (1973-02-01), Calvert et al.
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patent: 4325325 (1982-04-01), Larter
patent: 4325822 (1982-04-01), Miller
patent: 4505226 (1985-03-01), Carlson
patent: 4576115 (1986-03-01), Gordon
patent: 4646684 (1987-03-01), Embry
patent: 4649862 (1987-03-01), Neary
patent: 4771731 (1988-09-01), Dery et al.
patent: 5211133 (1993-05-01), Foley
patent: 5261350 (1993-11-01), Vavrek
Pedigrees The Pet Catalog; p. 14 Item L. #G30-0592 Lift & Sift Litter Box.
Taylor Gifts Catalog; p. 36, item #7493 Lift & Sift Litter Box.
The Oderless Cat Toilet Advertisement in House Beautiful; Sep. 1971; p. 180.

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