Water Services of America, Inc.
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Oct 28, 1997 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 297 Total Citation Count
- Jul 03, 1978 Earliest Filing
- 33 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
5680665 Ball conditioning, sorting and collecting apparatus for circulating ball cleaning systemExpiredApr 16, 96Oct 28, 97[B08B, F28G]
4984629 Ball collector and filling apparatus for circulating ball cleaning systemExpiredSep 13, 89Jan 15, 91[B08B, F28G]
D292309 End clip for a heat exchanger tube cleaning shuttle brush retaining basketExpiredFeb 11, 85Oct 13, 87[]
4653537 Fluid flow diverter valve with improved chamber arrangementExpiredMar 20, 86Mar 31, 87[F16K]
4627486 Correction for tube sheet misalignment in heat exchangers having tube cleaning arrangements thereinExpiredMay 28, 85Dec 09, 86[F28G]
4595050 Heat exchanger tube cleaning element capturing device with retainer rotation preventionExpiredAug 31, 84Jun 17, 86[F28G]
4592417 Heat exchanger tube cleaning element capturing device with offset stopExpiredDec 05, 84Jun 03, 86[F28G]
4561495 Alignment of basket retainer clips for heat exchanger tube cleaning elementsExpiredAug 31, 84Dec 31, 85[F28G]
4543996 Fluid flow diverter valve with improved flow-through constructionExpiredDec 05, 84Oct 01, 85[F16K]
4544026 Heat exchanger tube cleaning element capturing device with hinged retainerExpiredDec 05, 84Oct 01, 85[F28G]
Top Inventors for This Owner
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