Granted Patent
Utility
US 3,969,879 · App. 05/564,177
Hay rolling machine with improved roll starting and compression means
Inventor:
Shaun A. Seymour
Patented Case
View Patent ↗
Granted: Jul 20, 1976
Filed: Apr 1, 1975
Inventor
Shaun A. Seymour
Assignee (at issue)
Sperry Rand 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.