Granted Patent
Utility
US 4,848,026 · App. 07/114,226
Composting process for the production of mushroom cultivation substrates
Inventors:
Nigel Dunn-Coleman, Thomas J. Michaels
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Oct 26, 1987
Inventors
Nigel Dunn-Coleman
Thomas J. Michaels
Assignee (at issue)
Monterey Mushroom, 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.