Granted Patent
Utility
US 4,504,539 · App. 06/485,452
Warp yarn reinforced ultrasonic web bonding
Inventors:
Vaclav Petracek, Kenneth Y. Wang
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Apr 15, 1983
Inventors
Vaclav Petracek
Kenneth Y. Wang
Assignee (at issue)
Burlington Industries LLC
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.