Granted Patent
Utility
US 6,098,299 · App. 09/070,293
Chalk line holder
Inventors:
James E. Collins, Daniel Collins, Gary Nosek
Patented Case
View Patent ↗
Granted: Aug 8, 2000
Filed: Apr 30, 1998
Inventors
James E. Collins
Daniel Collins
Gary Nosek
Assignee (at issue)
Keson Industries, 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.