Combined bird beak expander and shield therefor

Details Combined bird beak expander and shield therefor Combined bird beak expander and shield therefor

1984-01-13

1987-04-28

Burke, Wallace R.

Animal husbandry

Feeder or waterer

Bird feeder

Patent

active

D02895730

REFERENCES:
patent: D229724 (1973-12-01), Ericson
patent: D273326 (1984-04-01), Peterson et al.
patent: 1359164 (1920-11-01), Lo Guidice et al.
patent: 1506032 (1924-08-01), Stevens
patent: 2583892 (1952-01-01), Shellhouse
Henry Schein 1982 Dental catalogue (112th ed.), p. 146, Hu-Friedy Molt Mouth Gags.

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