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:
Oct. 15, 1991
Filed:
Oct. 02, 1989
Applicant:
Inventor:
Dean M Ball, Gainesville, GA (US);
Assignee:
AgMaster, Inc., Gainesville, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
436113 ; 436151 ; 436147 ; 422 90 ; 422 93 ; 422 98 ; 422 69 ; 422 88 ; 338 34 ; 73 3106 ;
Abstract
Apparatus for detecting the level of ammonia in air comprises a conduit through which air is flowed as an airstream past two ammonia sensors that straddle an ammonia absorber. The apparatus also comprises a signal processing circuit for comparing signals generated by the two ammonia sensors with the difference representing the level of ammonia present in the air.
Published as: