Granted Patent
Utility
US 4,895,611 · App. 07/312,281
Method and apparatus for making non-roping thermoplastic draw tape for thermplastic bags
Inventors:
David A. Bryniarski, Edward G. Grosz
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: Feb 21, 1989
Inventors
David A. Bryniarski
Edward G. Grosz
Assignee (at issue)
Mobil Oil 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.