Granted Patent
Utility
US 6,011,478 · App. 09/069,086
Smoke sensor and monitor control system
Inventors:
Takashi Suzuki, Ryuichi YAMAZAKI, Yuki Yoshikawa
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Apr 29, 1998
Inventors
Takashi Suzuki
Ryuichi YAMAZAKI
Yuki Yoshikawa
Assignee (at issue)
NITTA 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.