The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 1981
Filed:
Mar. 09, 1979
Applicant:
Inventors:
Friedrich W Paurat, 4230 Wesel 1, DE;
Roland Paurat, 4223 Voerde, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F / ; E02D / ;
U.S. Cl.
CPC ...
37 82 ; 405283 ;
Abstract
A ditch-digging or trenching machine has a plurality of wall-engaging spreadable and retractable members which can be received in the trench to be advanced and provided with respective fluid-powered cylinders connectible to a cutting head for advancing the latter and drawing the retracted wall-engaging members thereafter to cut the trench. The cutter head includes a milling-type cutter in the form of a worm conveyor adapted to convey the detritus from the trench.
Paurat, Friedrich. (1981). Trench excavating and shoring apparatus (U.S. Patent No. 4247997). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4247997
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile