Granted Patent
Utility
US 4,569,674 · App. 06/404,791
Continuous vacuum wound drainage system
Inventors:
Earl G. Phillips, Robert W. Insalaco, William M. Booth
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Aug 3, 1982
Inventors
Earl G. Phillips
Robert W. Insalaco
William M. Booth
Assignee (at issue)
STRYKER 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.