Granted Patent
Utility
US 4,566,015 · App. 06/618,184
Image recording apparatus with adjustable mask
Inventor:
Hugh R. MacKenzie
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Jun 7, 1984
Inventor
Hugh R. MacKenzie
Assignee (at issue)
Polaroid 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.