Air stone

Details Air stone Air stone

1977-07-15

1978-10-10

Largen, James R.

Animal husbandry

Feeder or waterer

Bird feeder

D3099

Patent

active

D02498979

REFERENCES:
patent: 3507253 (1970-04-01), Willinger
patent: 3524430 (1970-08-01), Willinger
patent: 3575350 (1971-04-01), Willinger

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