BARTFAM, A CALIFORNIA LIMITED PARTNERSHIP

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 164

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5271750 Air filtration system with safety after-filterSep 01, 92Dec 21, 93[F01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5445557 Abrasive blasting floor recovery system which is resistant to cloggingExpiredSep 27, 93Aug 29, 95[B24C]
5411142 Air-flow control for particle cleaning systemsExpiredFeb 16, 94May 02, 95[B07B]
5351832 Control system for cleaning systemsExpiredMar 29, 93Oct 04, 94[B07B]
5337900 Floor recovery hopper and system therewithExpiredMar 30, 93Aug 16, 94[B07B]
5239787 Foot control for an abrasive blast systemExpiredJul 15, 91Aug 31, 93[B24C]
5231804 Hose cleaning systemExpiredJul 16, 91Aug 03, 93[B24C]
5216848 Dual controls for an abrasive blast systemExpiredJul 15, 91Jun 08, 93[B24C]
5147427 Air filtration systemExpiredJul 15, 91Sep 15, 92[B01D]
5103981 Particle separator/classification mechanismExpiredJan 24, 91Apr 14, 92[B07B]
5024029 Abrasive media valve systemExpiredOct 30, 89Jun 18, 91[B24C]
4932592 Pressurized hose handle with reverse gripExpiredOct 04, 88Jun 12, 90[B24C]
4926589 Pressurized hose handle with system controlsExpiredOct 04, 88May 22, 90[B24C]
4901928 Pressure hose handle and systemExpiredOct 04, 88Feb 20, 90[B24C]

Top Inventors for This Owner

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