Granted Patent
Utility
US 5,250,795 · App. 07/918,410
Feeble light measuring device
Inventors:
Musubu Koishi, Motoyuki Watanabe
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Jul 24, 1992
Inventors
Musubu Koishi
Motoyuki Watanabe
Assignee (at issue)
HAMAMATSU PHOTONICS K.K.
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.