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Patent applications and USPTO patent grants for Schwarz; Ernst.The latest application filed is for "connection and joint piece for well tubes".
Patent | Date |
---|---|
Connection and joint piece for well tubes Grant 7,677,610 - Schwarz , et al. March 16, 2 | 2010-03-16 |
Connection and Joint Piece for Well Tubes App 20090039647 - Schwarz; Ernst ;   et al. | 2009-02-12 |
Connector and Adapter Piece for Corrugated Pipes App 20070296212 - Schwarz; Ernst | 2007-12-27 |
Connector for a corrugated pipe with locking portion Grant 6,464,263 - Schwarz , et al. October 15, 2 | 2002-10-15 |
Joining and attachment piece for corrugated tubes Grant 5,407,236 - Schwarz , et al. April 18, 1 | 1995-04-18 |
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