IP Library › Granted Patent US 6,833,681
Granted Patent Utility
US 6,833,681 · Confirmation No. 9853

BARRIER MOVEMENT CONTROL FOR MID-TRAVEL BARRIER MOVEMENT START

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Quick Facts
Patent No.
US 6,833,681
App. No.
10/176,166
Filed
2002-06-20
Granted
2004-12-21
Pub. No.
US20030234628A1
Examiner
RO, BENTSU
Art Unit
2837
PTA
-238 days