Glasses

Details Glasses Glasses

1989-08-02

1992-01-14

Ansher, Bernard

Photography and optical equipment

Optical article not elsewhere specified

Lens or objective

Patent

active

D03231771

REFERENCES:
patent: D222533 (1971-11-01), Simpkins
patent: D223983 (1972-06-01), Schauweker
patent: D313236 (1990-12-01), Mackay
patent: 3945044 (1976-03-01), McGee et al.
patent: 4689838 (1987-09-01), Angermann et al.

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