Granted Patent
Utility
US 4,433,817 · App. 06/426,354
Spool pin holder for a sewing machine
Inventor:
Philip F. Minalga
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Sep 29, 1982
Inventor
Philip F. Minalga
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.