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Construction
Class Information
Number:
172/732
Name:
Earth working
>
Tool, standard or connection
>
Non-rectangular, symmetrical type
> Triangular blade
Description:
Apparatus in which the earth working element has the appearance of an isosceles triangle when viewed in plan or front elevation.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
7568439
Fertilizer knife and point structure
Aug. 4, 2009
7059257
Minimum till seeding knife
Jun. 13, 2006
5881821
Fin sweep assembly and method of manufacture
Mar. 16, 1999
5495814
Sub-zone tiller with offset fertilizer placement
Mar. 5, 1996
5259461
Cultivator sweep
Nov. 9, 1993
5172770
Agricultural shares with dimples
Dec. 22, 1992
4850435
Cultivator sweep with pair of rearwardly extending downturned rigid flaps
Jul. 25, 1989
4363364
Plow chisel with pointed shank having pointed chisel cap secured thereto by weld
Dec. 14, 1982
4185699
Soil contact tool
Jan. 29, 1980
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