Granted Patent
Utility
US 5,154,086 · App. 07/723,354
Method and apparatus for measuring closure forces and variances therein associated with reclosable thermoplastic zippered bags
Inventors:
Jose Porchia, Brian C. Dais, Arnold M. Bartz, Francis D. Biel, James C. Cummins, Gary A. Douglass, James R. Hendershot, Ralph L. McCartney, James R. Wigle
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Jun 28, 1991
Inventors
Jose Porchia
Brian C. Dais
Arnold M. Bartz
Francis D. Biel
James C. Cummins
Gary A. Douglass
James R. Hendershot
Ralph L. McCartney
James R. Wigle
Assignee (at issue)
Dowbrands L.P.
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.