Granted Patent
Utility
US 4,376,312 · App. 06/265,199
Hydraulically actuated cardiac prosthesis
Inventors:
Thomas C. Robinson, Sotiris Kitrilakis, Thomas Martin
Patented Case
View Patent ↗
Granted: Mar 15, 1983
Filed: May 19, 1981
Inventors
Thomas C. Robinson
Sotiris Kitrilakis
Thomas Martin
Assignee (at issue)
Foxcroft Associates
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.