The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1991
Filed:
Mar. 13, 1990
Applicant:
Inventors:
Assignee:
Computed Anatomy Incorporated, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351212 ;
Abstract
A cylindrical keratoscope is provided with an improved structure for illuminating the rings disposed along the length of its bore by having the light-transmitting rings defined as the lands between a series of opaquely coated, incised circular grooves in the bore. A circular, fluorescent, light tube is disposed in an aluminum light box having a semi-toroidal concavity provided with a light-reflecting surface to direct or collimate the light from the tube toward the light-receiving base of the device.