AN UNDIVIDED 50% TO ALBERT LEE HALFF AND HENRY M. HALFF, CO-TRUSTEES OF THE RESIDUARY TRUST ESTABLISHED UNDER ARTICLE VIII OF THE LAST WILL AND TESTAMENT OF LEE BENSON HALFF, DECEASED, C/O ALBERT H. HALFF, 1 VILLA JARDIN, SAN ANTONIO, TX 78

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 451

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6080309 Means for separation and removal of impurities from liquidsMay 11, 95Jun 27, 00[C02F]
5688399 Means for separation and removal of impurities from liquidsFeb 13, 96Nov 18, 97[C02F]
5425883 Method for separation and removal of impurities from liquidsFeb 10, 93Jun 20, 95[C02F]
5372725 Method for separation and removal of impurities from liquidsDec 24, 92Dec 13, 94[C02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6301984 Gear shifting deviceExpiredJun 12, 00Oct 16, 01[F16H]

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