IP Library › Patent Application 09787892
Patent Application Utility PCT National Stage
App. No. 09/787,892 · Confirmation No. 5016

OPTICAL DIFFERENTIATION DEVICE

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗
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Quick Facts
App. No.
09/787,892
Filed
2001-03-28
Granted
2003-09-30
Art Unit
2871
PTA
-23 days