Ophthalmic refractor

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Information

Patent Grant
D344587

References
Source

Patent Number
D344,587
Date Filed
Wednesday, March 6, 1991
33 years ago
Date Issued
Tuesday, February 22, 1994
30 years ago

Inventors
Original Assignees
- R. H. Burton Company
Examiners
- Word; A. Hugo
- Simmons; Ian
Agents
- Mueller and Smith

US Classifications
- D24 - Medical and laboratory equipment
Field of Search
- US
- 351 216
- 351 217
- 351 220
- 351 229
- 351 233
- 351 234
- 351 235
- 351 236
- 351 246
- D24 172
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a ophthalmic refractor, as shown and described.

US Referenced Citations (8)

Number	Name	Date	Kind
D114487	Peck	Apr 1939
2266797	Peck et al.	Dec 1941
2938426	Armbruster et al.	May 1960
2968213	Wright et al.	Jan 1961
2995065	Wright et al.	Aug 1961
3498699	Wilkinson	Mar 1970
4606624	Wood	Aug 1986
4943162	Sims	Jul 1990

Non-Patent Literature Citations (2)

Entry
Bausch and Lomb Optical Company "Greens' Refractor" Aug. 19, 1955 Cover Page.
American Optical Ophthalmic Instruments "Refractor" @ 1979 p. 4.