04207950 is referenced by 21 patents and cites 7 patents.

A marking element is carried by at least one arm which is pivotally mounted to a short boom. The boom, in turn, is pivotally mounted to the outboard end of a tool bar or planter frame. A single hydraulic ram is used to move the marker between a use position in which the arm extends horizontally so the marker engages the ground, and an upright position in which the arm is folded over the tool bar.

Title
Agricultural row marker
Application Number
5/900498
Publication Number
4207950
Application Date
April 27, 1978
Publication Date
June 17, 1980
Inventor
Jon E Kinzenbaw
P.O. Box 525, Wiliamsburg, 52361
IA, US
Agent
Emrich Root Lee Brown & Hill
IPC
A01B 17/00
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