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:
Aug. 06, 1991
Filed:
Sep. 22, 1989
Applicant:
Inventors:
Robert C Funk, Auburn, IL (US);
Kenneth A Sudduth, Columbia, MO (US);
John W Hummel, Urbana, IL (US);
Assignee:
AGMED Inc., Springfield, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250341 ; 250339 ;
Abstract
A soil test apparatus for field use comprises structure adapting the apparatus for transport over a field for testing the soil thereof; an infrared radiation generator for producing infrared radiation at a plurality of predetermined wavelengths, an elongate light carrying member coupled to the infrared radiation generator and extending therefrom for directing infrared radiation onto the soil; and a light detector for detecting infrared radiation reflected from the soil and for producing corresponding electrical signals.