Granted Patent
Utility
US 4,177,590 · App. 05/941,002
Picture frame assembly
Inventors:
Lawrence P. Tushner, Walter J. Krol
Patented Case
View Patent ↗
Granted: Dec 11, 1979
Filed: Sep 11, 1978
Inventors
Lawrence P. Tushner
Walter J. Krol
Assignee (at issue)
Intercraft Industries 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.