Granted Patent
Utility
US 4,522,665 · App. 06/587,344
Primer mix, percussion primer and method for initiating combustion
Inventors:
Donald N. Yates, Jr., Michael Oestrich
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Mar 8, 1984
Inventors
Donald N. Yates, Jr.
Michael Oestrich
Assignee (at issue)
Geo Vann, 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.