Vision tester

Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Orthopedic or chiropractic

Patent

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Patent

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D02984571

REFERENCES:
patent: D170296 (1953-09-01), Armbruster
patent: 1990218 (1935-02-01), Bailey
patent: 2478662 (1949-08-01), Long
patent: 4279479 (1981-07-01), Schrier

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