Granted Patent
Utility
US 6,782,830 · App. 10/660,417
Obturator for large caliber smooth bore ammunition
Inventors:
Calvin T. Candland, Dipak S. Kamdar, Rollie H. Dohrn
Patented Case
View Patent ↗
Granted: Aug 31, 2004
Filed: Sep 11, 2003
Inventors
Calvin T. Candland
Dipak S. Kamdar
Rollie H. Dohrn
Assignee (at issue)
Alliant Techsystems 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.