Granted Patent
Utility
US 4,427,486 · App. 06/334,088
Apparatus for mounting transparency film
Inventors:
Lawrence E. Green, Richard R. Wareham
Patented Case
View Patent ↗
Granted: Jan 24, 1984
Filed: Dec 24, 1981
Inventors
Lawrence E. Green
Richard R. Wareham
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.