Indirect ophthalmoscopy lens retaining ring

We claim the ornamental design for an indirect ophthalmoscopy lens retaining ring, as shown and described.

FIG. 1 is a side elevational view of an indirect ophthalmoscopy lens retaining ring, showing our new design;

FIG. 2 is a cross-sectional view taken along line 2--2 of FIG. 1;

FIG. 3 is an end elevational view taken from the right of FIG. 1; and,

FIG. 4 is an end elevational view taken from the left of FIG. 1.

Patent	Priority	Assignee	Title
7499219,	Oct 14 2005	VOLK OPTICAL INC	Optimized lens for indirect ophthalmoscopy
D775357,	Oct 13 2015	SENSOR MEDICAL TECHNOLOGY, LLC; KATENA PRODUCTS, INC	Ophthalmic lens
D777928,	Oct 13 2015	SENSOR MEDICAL TECHNOLOGY, LLC; KATENA PRODUCTS, INC	Ophthalmic lens

Patent	Priority	Assignee	Title
4913545,	Oct 06 1988	VOLK OPTICAL, INC	Adapter for lens retaining ring for use in connection with eye examination
4934809,	Jun 24 1988	VOLK OPTICAL, INC	Lens positioning device for indirect biomicroscopy of the eye
5255025,	Oct 15 1991	VOLK OPTICAL, INC	Measurement apparatus for indirect ophthalmoscopy
5589896,	Oct 26 1994	OCULAR INSTRUMENTS, INC	Adjustable indirect ophthalmoscopy lens
5784147,	Nov 15 1993		Indirect ophthalmoscopy lens system
D357319,	Nov 15 1993	VOLK OPTICAL, INC	Indirect ophthalmoscopy lens retaining ring

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Nov 04 1998		Volk Optical, Inc.	(assignment on the face of the patent)
Nov 16 1998	MUELLER, RICHARD M	VOLK OPTICAL INC	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	009825	0997	pdf
Nov 27 1998	VOLK, DONALD A	VOLK OPTICAL INC	ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS	009825	0997	pdf

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