Granted Patent
Utility
US 4,628,929 · App. 06/766,878
Retractable blade bleeding time device
Inventors:
Franklin S. Intengan, Zindel Herbert Heller, Fred K. White
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Aug 16, 1985
Inventors
Franklin S. Intengan
Zindel Herbert Heller
Fred K. White
Assignee (at issue)
American Hospital Supply Corp.
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.