E21C 25/02

Sub-Class

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Description

Class  E21C : MINING OR QUARRYING


Subclass 25/02: Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more percussive tools moved through the seam

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
11846188 Method for rotary clearing in stripping tooth holder of mining machine and rotary clearing device in stripping tooth holderSep 10, 20Dec 19, 23Not available
11585154 Mining or construction vehicleJun 11, 18Feb 21, 23EPIROC ROCK DRILLS AKTIEBOLAG
10400597 Non-concentric protruding shaft fixed bearing reciprocating impact part for implementing reciprocating impact part non-concentric protruding shaft fixed bearing methodJan 29, 15Sep 03, 19Not available
8690261 Hydraulic resonant breaking hammerDec 31, 10Apr 08, 14Not available

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2016/0273,357 METHOD OF LOADING MATERIAL BY CURVED AUXILIARY ROCKER ARM ON MINING MACHINE, AND MINING MACHINE HAVING CURVED AUXILIARY ROCKER ARM CAPABLE OF LOADING MATERIAL FOR IMPLEMENTING SAID METHODOct 21, 14Sep 22, 16Not available

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Top Owners in This Subclass

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Patents Issued To Date - By Filing Year

Average Time to Issuance