Granted Patent
Utility
US 4,998,945 · App. 07/446,562
Transplanting equipment
Inventors:
John B. Holt, Simon Miles, Arthur Leonard Wilkin
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Dec 7, 1989
Inventors
John B. Holt
Simon Miles
Arthur Leonard Wilkin
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.