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:
Apr. 13, 1976
Filed:
Jun. 16, 1975
Applicant:
Inventor:
LeRoy E Johnson, Stanley, ND (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
A01C / ;
U.S. Cl.
CPC ...
111-1 ; 111 37 ;
Abstract
A grain drill having a plurality of closely spaced seeding units is modified to change the pattern of seed flow through one of the seeding units cyclically within the length of a row, so that when the plants emerge, the one row will be visibly different from the other rows. The visibly different row can then be used as a marker for weed control spraying or the like.