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:
Feb. 27, 1979
Filed:
Feb. 07, 1977
Applicant:
Inventors:
Robert C Dean, Jr, Norwich, VT (US);
Paul A Hoisington, Etna, NH (US);
Brian F Walsh, Etna, NH (US);
Frank E Mastro, Lebanon, NH (US);
Assignee:
Life Sciences, Inc., Greenwich, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128 / ; 73 80 ; 128 / ;
Abstract
An improved ocular plethysmograph for use in conjunction with known pulse volume recorders, and offering increased performance and simplicity as well as lower cost of manufacture. The device employs a means whereby a large DC pressure signal is cancelled across a very sensitive DC pressure transducer employed to detect directly the tiny pressure fluctuations resulting from minute volume plethysmic changes of the human ocular globe. The means employed provides secondary advantages in use.