Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 172/148
Name: Earth working > Diverse tools > Three or more diverse implements following same path (a, b, c, or a, b, a,) > Longitudinally spaced like implements with intermediate diverse implement (a, b, a)
Description: Apparatus in which the first and third implements in the direction of travel are alike and the intermediate or second implement is of a different type.

Patents under this class:

Patent Number Title Of Patent Date Issued
6382873 Soil levelling device May. 7, 2002
5590721 Conservation tillage tool Jan. 7, 1997
5477792 Apparatus for preparing soil for seed and method of using the apparatus Dec. 26, 1995
5156216 Conservation compliance tillage tool Oct. 20, 1992
4412589 Earth clod pulverizer Nov. 1, 1983
4374546 Conditioning apparatus for dirt race tracks Feb. 22, 1983
4243104 Soil working machine Jan. 6, 1981

  Recently Added Patents
Method for facilitating assessment of a coursework answer and moderating the assessment
Launch cable case
Systems and methods for DC-to-DC converter control
Communications in an asynchronous cellular wireless network
Buckle (tube)
MOS transistor having combined-source structure with low power consumption and method for fabricating the same
Electric power steering apparatus
  Randomly Featured Patents
Viscosity index modifiers and lubricant compositions containing such viscosity index modifiers
Battery cell tray assembly and sytem
Foaming agents for use in coal seam reservoirs
Hydrodynamic bearing, spindle motor and hard disk drive
Telephone handset
Fabric treatment appliance with steam generator having a variable thermal output
Method of and apparatus for communicating data structures between devices in a networking environment
Image display device incorporating driver circuits on active substrate and other methods to reduce interconnects
Transformerless data transmission line driver