Granted Patent
Utility
US 5,694,700 · App. 08/474,402
Method and instrument for the preparation of pollen for cryogenic storage
Inventors:
John A. Greaves, Raymond Russotti
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Jun 7, 1995
Inventors
John A. Greaves
Raymond Russotti
Assignee (at issue)
Zenco (No. 4) Limited
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.