Granted Patent
Utility
US 4,355,873 · App. 06/271,579
Photographic control system for varying both flash fire aperture and exposure termination in correspondence with film speed
Inventor:
Peter P. Carcia
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jun 8, 1981
Inventor
Peter P. Carcia
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.