Sleep mask

Details Sleep mask Sleep mask

1986-08-07

1989-07-11

Dunkins, Bruce W.

Photography and optical equipment

Ophthalmic article

D29 9

Patent

active

D03021670

REFERENCES:
patent: D149713 (1948-05-01), Welvang
patent: 1190567 (1916-07-01), Malcom
patent: 1886725 (1932-11-01), Pedersen
patent: 2305080 (1942-12-01), Hemphill et al.
patent: 2337617 (1943-12-01), Miller, Jr.
patent: 2671898 (1954-03-01), Wade

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