USD476977SExpiredUtility

Optical amplifier

Assignee: PHOTON X INCPriority: Sep 28, 2001Filed: Sep 28, 2001Granted: Jul 8, 2003

Est. expirySep 28, 2021(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for an optical amplifier, as shown and described.

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