GB2043937B - Trial frames - Google Patents

Trial frames

Info

Publication number
GB2043937B
GB2043937B GB7943592A GB7943592A GB2043937B GB 2043937 B GB2043937 B GB 2043937B GB 7943592 A GB7943592 A GB 7943592A GB 7943592 A GB7943592 A GB 7943592A GB 2043937 B GB2043937 B GB 2043937B
Authority
GB
United Kingdom
Prior art keywords
trial frames
trial
frames
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
GB7943592A
Other versions
GB2043937A (en
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.)
Clulow D E
Original Assignee
Clulow D E
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 Clulow D E filed Critical Clulow D E
Priority to GB7943592A priority Critical patent/GB2043937B/en
Publication of GB2043937A publication Critical patent/GB2043937A/en
Application granted granted Critical
Publication of GB2043937B publication Critical patent/GB2043937B/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A61B3/04—Trial frames; Sets of lenses for use therewith
GB7943592A 1978-12-22 1979-12-18 Trial frames Expired GB2043937B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7943592A GB2043937B (en) 1978-12-22 1979-12-18 Trial frames

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7849919 1978-12-22
GB7943592A GB2043937B (en) 1978-12-22 1979-12-18 Trial frames

Publications (2)

Publication Number Publication Date
GB2043937A GB2043937A (en) 1980-10-08
GB2043937B true GB2043937B (en) 1982-07-14

Family

ID=26270085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7943592A Expired GB2043937B (en) 1978-12-22 1979-12-18 Trial frames

Country Status (1)

Country Link
GB (1) GB2043937B (en)

Also Published As

Publication number Publication date
GB2043937A (en) 1980-10-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee