IP Library › Granted Patent US 5,156,311
Granted Patent Utility
US 5,156,311 · App. 07/840,736

Dental floss dispenser

Inventors: John W. Spencer, Jr., Edward F. John
Patented Case View Patent ↗
Granted: Oct 20, 1992 Filed: Feb 21, 1992
Inventors
John W. Spencer, Jr.
Edward F. John
Assignee (at issue)
W. L. Gore & Associates, 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,156,311
App. No.
07/840,736
Filed
1992-02-21
Granted
1992-10-20
Kind
A