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:
Apr. 02, 1985
Filed:
Oct. 19, 1982
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 43 ;
Abstract
A mining machine comprises a body, drum-type cutting heads, a gantry coupled with the body, adjustable hydraulic supports disposed inside the body, grippers hinge-connected to the body by means of levers located in parallel to one another and adapted to permit moving the machine in a vertical direction, and links, each coupled with the respective top lever and with the respective hydraulic support.
Spektor, Jury. (1985). Mining machine for extraction of minerals (U.S. Patent No. 4508391). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4508391
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile