Granted Patent
Utility
US 6,374,784 · App. 09/441,652
Valve control mechanism for intake and exhaust valves of internal combustion engines
Inventors:
Dieter Tischer, Alfred Trzmiel, Dieter Maisch, Herbert Panowitz
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Nov 12, 1999
Inventors
Dieter Tischer
Alfred Trzmiel
Dieter Maisch
Herbert Panowitz
Assignee (at issue)
Hydraulik-Ring GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.