BE438931A - - Google Patents

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Publication number
BE438931A
BE438931A BE438931DA BE438931A BE 438931 A BE438931 A BE 438931A BE 438931D A BE438931D A BE 438931DA BE 438931 A BE438931 A BE 438931A
Authority
BE
Belgium
Prior art keywords
tube
scale
lens
diopters
optometric
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE438931A publication Critical patent/BE438931A/fr

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  • Eye Examination Apparatus (AREA)
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Publications (1)

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Family

ID=97035

Family Applications (1)

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Country Status (1)

Country Link
BE (1) BE438931A (enrdf_load_html_response)

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