Granted Patent
Utility
US 4,832,308 · App. 07/007,501
Panel for concrete formwork
Inventors:
Leonid Slonimsky, Dan D. Dorcich
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Jan 28, 1987
Inventors
Leonid Slonimsky
Dan D. Dorcich
Assignee (at issue)
Ontario Inc.
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.