Granted Patent
Utility
US 5,644,852 · App. 08/611,065
Chalk line reel
Inventors:
Anthony B. Fuller, Toby J. Beckmann, Joseph A. Sorensen, Thomas M. Chervenak
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Mar 5, 1996
Inventors
Anthony B. Fuller
Toby J. Beckmann
Joseph A. Sorensen
Thomas M. Chervenak
Assignee (at issue)
American Tool Companies, 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.