Animal husbandry – Waste collector
Patent
1987-06-12
1989-05-02
Largen, James R.
Animal husbandry
Waste collector
Patent
active
D03009653
REFERENCES:
patent: D189237 (1960-11-01), Hufeisen et al.
patent: D214566 (1969-07-01), Swinneg
patent: D220961 (1971-06-01), Ringelman et al.
patent: D227126 (1973-06-01), Brison
patent: 3490417 (1970-01-01), Swinneg
patent: 4696257 (1987-09-01), Neary et al.
Doskocil Manufacturing Co. Inc.
Largen James R.
McHugh Charles W.
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