IP Library › Granted Patent US 4,687,007
Granted Patent Utility
US 4,687,007 · App. 06/832,300

Process for drying and expanding tobacco

Inventors: Robert F. Denier, Robert H. Marshall
Patented Case View Patent ↗
Granted: Aug 18, 1987 Filed: Feb 24, 1986
Inventors
Robert F. Denier
Robert H. Marshall
Assignee (at issue)
Brown & Williamson Tobacco 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.

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 4,687,007
App. No.
06/832,300
Filed
1986-02-24
Granted
1987-08-18
Kind
A