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Class 172/229 - Interconnected for simultaneous raising and lowering


Subclass of Class 172 - Earth working
Definition: Apparatus having means connecting the earth working elements
No. of patents: 2
Last issue date: 03/20/2007


NumberTitleIssue Date
7193829Combination current sensor and relay
A protection device for monitoring current in a power cable to an electrical device and for controlling a remotely located starter for the electrical device in response to a system controller. The device includes a transformer magnetically linked with the power cabl...
03/20/2007
5062488Small terrace generating machine with lateral dammers
An apparatus is disclosed to perform a method of tilling the soil on a crop field that: will hold rainwater where it falls, increase the percolation rate of this water into the soil, and provide storage room above and below ground level for this water. Th...
11/05/1991
 
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