Patent
   D344587
Priority
Mar 06 1991
Filed
Mar 06 1991
Issued
Feb 22 1994
Expiry
Feb 22 2008
Assg.orig
Entity
unknown
3
8
n/a
The ornamental design for a ophthalmic refractor, as shown and described.

FIG. 1 is a rear perspective view of a ophthalmic refractor showing our new design;

FIG. 2 is a front view thereof, the broken line showing of the details is for illustrative purposes only and forms no part of the claimed design;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a bottom view thereof.

Miller, Robert G., Wood, David E., Burton, Roy H.

Patent Priority Assignee Title
D374720, Jun 08 1995 Ophthalmic refractor
D550845, Apr 11 2006 Kabushiki Kaisha Topcon Optometer
D919096, Sep 27 2018 Essilor International Refractor
Patent Priority Assignee Title
2266797,
2938426,
2968213,
2995065,
3498699,
4606624, Oct 13 1983 R. H. Burton Company Refractor having simplified cylinder lens assembly
4943162, Nov 09 1984 Astigmatic self-refractor and method of use
114487,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 28 1991BURTON, ROY H R H BURTON COMPANY, A CORP OF OHIOASSIGNMENT OF ASSIGNORS INTEREST 0056310724 pdf
Mar 05 1991WOOD, DAVID E R H BURTON COMPANY, A CORP OF OHIOASSIGNMENT OF ASSIGNORS INTEREST 0056310724 pdf
Mar 05 1991MILLER, ROBERT G R H BURTON COMPANY, A CORP OF OHIOASSIGNMENT OF ASSIGNORS INTEREST 0056310724 pdf
Mar 06 1991R. H. Burton Company(assignment on the face of the patent)
Apr 27 2000R H BURTON COMPANY, THEKEYBANK NATIONAL ASSOCIATIONSECURITY AGREEMENT0108710563 pdf
Dec 11 2008KEYBANK NATIONAL ASSOCIATIONTHE R H BURTON COMPANYRELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS 0220120403 pdf
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