IP Library › Granted Patent US 6,702,221
Granted Patent Utility
US 6,702,221 · App. 10/143,474

Magnetorheological fluid actively controlled bobbin tensioning apparatus

Inventors: David Haber, Emil M. Shtarkman
Patented Case View Patent ↗
Granted: Mar 9, 2004 Filed: May 7, 2002
Inventors
David Haber
Emil M. Shtarkman
Assignee (at issue)
NORTHROP GRUMMAN 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 6,702,221
App. No.
10/143,474
Filed
2002-05-07
Granted
2004-03-09
Kind
B2