Granted Patent
Utility
US 5,325,977 · App. 08/007,313
Vented closure for a capillary tube
Inventors:
John L. Haynes, III, Stephen C. Wardlaw, Edward Williamson
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Jan 21, 1993
Inventors
John L. Haynes, III
Stephen C. Wardlaw
Edward Williamson
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.