Automatic eye-refraction measuring apparatus with spectacle lens measuring apparatus

- Canon
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front elevational view of an automatic eye-refraction measuring apparatus with spectacle lens measuring apparatus showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

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

FIG. 7 is a perspective view thereof.

Referenced Cited
U.S. Patent Documents
D297645 September 13, 1988 Nishimura
D316144 April 9, 1991 Nishimura
D320077 September 17, 1991 Koizumi
D325782 April 28, 1992 Elic
D327024 June 16, 1992 Elic
4571842 February 25, 1986 Ikezawa et al.
Other references
  • Topcon; CL-2000; Feb. 1989; cover; applicant provided. Topcon; CL-1500; Apr. 1986; cover; applicant provided. Nikos; NL-30; cover; applicant provided.
Patent History
Patent number: D341541
Type: Grant
Filed: Apr 10, 1992
Date of Patent: Nov 23, 1993
Assignee: Canon Kabushiki Kaisha (Tokyo)
Inventor: Hiroyuki Ichiyoshi (Kawasaki)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Antoine D. Davis
Law Firm: Fitzpatrick, Cella, Harper & Scinto
Application Number: 7/866,545