PENGO CORPORATION, C/O METAPOINT PARTNERS

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 690
 
  
 
F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES 233
 
  
 
E02F DREDGING; SOIL-SHIFTING 144
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5476149 Pilot bitMar 20, 95Dec 19, 95[E21B]
5450913 Continuous soil sampling system and methodOct 01, 93Sep 19, 95[E21B]
5433033 Excavating tooth and shank plate assemblyApr 18, 94Jul 18, 95[F02F]
5426875 Reversible tooth with adjustable attack angleApr 18, 94Jun 27, 95[F02F]
5427191 Auger head assembly and method of drilling hard earth formationsOct 21, 94Jun 27, 95[E21B]
5372208 Tube section having slots for samplingNov 02, 92Dec 13, 94[E21B]
5366031 Auger head assembly and method of drilling hard earth formationsMay 03, 93Nov 22, 94[E21B]
5269572 Apparatus and method for coupling elongated membersAug 28, 92Dec 14, 93[F16L, E21B]
5184412 Auger tooth locking mechanismJun 10, 92Feb 09, 93[E02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4821818 Tube auger sectionsExpiredFeb 01, 88Apr 18, 89[E21B]

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