Granted Patent
Utility
US 4,371,249 · App. 06/353,427
Film processing kit
Inventors:
Frank M. Czumak, Peter K. Fichter
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Mar 1, 1982
Inventors
Frank M. Czumak
Peter K. Fichter
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.