Granted Patent
Utility
US 6,024,117 · App. 09/113,156
Valve guide structure
Inventors:
Taku Tomita, Mitsutoshi Araki, Naoyuki Yasuda
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Jul 10, 1998
Inventors
Taku Tomita
Mitsutoshi Araki
Naoyuki Yasuda
Assignee (at issue)
SMC CORPORATION
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.