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. 14, 1990
Filed:
Jul. 07, 1989
Applicant:
Inventor:
Mark Johnston, Macomb, IL (US);
Assignee:
Yetter Manufacturing Company, Colchester, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
A01C / ; A01B / ;
U.S. Cl.
CPC ...
111121 ; 111123 ; 111167 ; 111927 ; 172166 ; 172710 ;
Abstract
A parallel linkage arrangement for supporting a coulter disc and liquid fertilizer applicator on an agricultural tool bar such that the coulter disc and the fertilizer applicator maintain the same relative relationship to the ground regardless of vertical travel of the coulter disc or the applicator.