Granted Patent
Utility
US 4,187,916 · App. 05/841,954
Soil conditioning and seed bed preparing apparatus
Inventors:
Jerrell W. Harden, William P. Brown
Patented Case
View Patent ↗
Granted: Feb 12, 1980
Filed: Oct 13, 1977
Inventors
Jerrell W. Harden
William P. Brown
Assignee (at issue)
Brown Manufacturing Group, Inc.
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.