CA159508A - Apparatus for grinding bifocal lenses - Google Patents

Apparatus for grinding bifocal lenses

Info

Publication number
CA159508A
CA159508A CA000159508A CA159508DA CA159508A CA 159508 A CA159508 A CA 159508A CA 000159508 A CA000159508 A CA 000159508A CA 159508D A CA159508D A CA 159508DA CA 159508 A CA159508 A CA 159508A
Authority
CA
Canada
Prior art keywords
grinding
bifocal lenses
bifocal
lenses
grinding bifocal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000159508A
Other languages
French (fr)
Inventor
Joseph Hiram Crossman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA159508A publication Critical patent/CA159508A/en
Expired legal-status Critical Current

Links

CA000159508A 1914-07-29 1914-07-29 Apparatus for grinding bifocal lenses Expired CA159508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA159508T 1914-07-29

Publications (1)

Publication Number Publication Date
CA159508A true CA159508A (en) 1914-12-15

Family

ID=45279212

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000159508A Expired CA159508A (en) 1914-07-29 1914-07-29 Apparatus for grinding bifocal lenses

Country Status (1)

Country Link
CA (1) CA159508A (en)

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