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Patent applications and USPTO patent grants for Butz; Hans.The latest application filed is for "gas flow control flap operating mechanism".
Patent | Date |
---|---|
Gas flow control flap operating mechanism Grant 7,343,935 - Butz , et al. March 18, 2 | 2008-03-18 |
Gas flow control flap operating mechanism App 20050249546 - Butz, Hans ;   et al. | 2005-11-10 |
Multi-speed gear hub shiftable under load Grant 6,692,400 - Butz February 17, 2 | 2004-02-17 |
Multi-speed gear hub shiftable under load App 20030017905 - Butz, Hans | 2003-01-23 |
Casting spout for metallurgical vessels Grant 5,314,099 - Butz , et al. May 24, 1 | 1994-05-24 |
Freewheel drive hub for a bicycle Grant 4,567,973 - Butz February 4, 1 | 1986-02-04 |
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