Granted Patent
Utility
US 4,397,567 · App. 06/204,432
Timepiece construction with a caseback removable using a credit card
Inventor:
Stewart R. Carl
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Nov 6, 1980
Inventor
Stewart R. Carl
Assignee (at issue)
Timex 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.