Granted Patent
Utility
US 4,178,863 · App. 06/016,636
Feed cam rephasing device
Inventor:
Donald Lawrie
Patented Case
View Patent ↗
Granted: Dec 18, 1979
Filed: Mar 1, 1979
Inventor
Donald Lawrie
Assignee (at issue)
The Singer Company Limited
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.