U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 172/155 - Laterally spaced like tools with intermediate diverse tool (A, B, A)


Subclass of Class 172 - Earth working
Definition: Apparatus comprising a pair of like earth working elements
No. of patents: 8
Last issue date: 02/12/2008


NumberTitleIssue Date
7328807Method and device for classifying fine particles
The present invention provides a method for classifying fine particles, the method comprising: introducing a fine particle dispersion in which fine particles are dispersed in a liquid medium into an inlet of a microchannel having the inlet and a recovery portion; an...
02/12/2008
5479728Apparatus for backfilling and tamping a trench
A backfiller and tamper unit (10) is disclosed which is a self contained unit that acts to both backfill and compact soil into a trench for complete restoration. The unit includes a tractor (12) which mounts a vibrator and tamping wheel assembly (14) and ...
01/02/1996
5477792Apparatus for preparing soil for seed and method of using the apparatus
A method of continuously applying an additive to soil with a soil treating apparatus as the soil treating apparatus is advanced in a travel direction along a planting path on soil being treated. The method includes the steps of resituating residue in the ...
12/26/1995
4381823Combination fertilizer applicator and tillage implement with adjustable sweep assemblies
Apparatus for combining light tillage and application of liquid fertilizer in a single implement includes a frame having at least a forward and a rear mounting bar. A plurality of sweep assemblies are mounted to the forward mounting bar. Anhydrous fertili...
05/03/1983
4336844Farm implement
There is disclosed a farm implement having a frame connectible to a tractor by means of a three-point hitch to permit it to be moved forwardly over the ground level, a first set of chisels supported on the frame in laterally spaced-apart relation, a secon...
06/29/1982
4333533Weeder for row crops
A weeder for row crops has a main frame adapted to be mounted at the rear of a tractor. A pair of upright skid boards, spaced at the front and rearwardly divergent, are adjustably interconnected so that their spacing and angular relationship may be varied...
06/08/1982
4088196Soil cultivating implements
A cultivator implement has a row of freely rotatable soil working members connected to a transverse frame beam by brackets. The members each have a stub shaft secured to an inclined web of a corresponding bracket so that the axis of rotation of each membe...
05/09/1978
4010900Mobile agricultural spray machine
An agricultural spraying machine comprising an assembly having at least two moving sections resting on wheels on the soil. This assembly supports at least two spray conduits having spraying nozzles and is attached to a tractor vehicle having a powder feed...
03/08/1977
 
Sign InRegister
Username  
Password   
forgot password?