IP Library Granted Patent US 6,816,664
Granted Patent Utility
US 6,816,664 · App. 10/115,152

Motor driven variable optical attenuator

Inventors: Kun-Tsan Wu, Chien-Cheng Chen
Patented Case View Patent ↗
Granted: Nov 9, 2004 Filed: Apr 2, 2002
Inventors
Kun-Tsan Wu
Chien-Cheng Chen
Assignee (at issue)
Hon Hai Precision Ind. Co., Ltd.

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 6,816,664
App. No.
10/115,152
Filed
2002-04-02
Granted
2004-11-09
Kind
B2