Granted Patent
Utility
US 5,977,433 · App. 09/025,583
Maintenance of male-sterile plants
Inventors:
Mark E. Williams, Jan Leemans
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Feb 18, 1998
Inventors
Mark E. Williams
Jan Leemans
Assignee (at issue)
Plant Genetic Sysetms, N.V.
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.