USD351982SExpiredUtility

Digital or key card operated electronic door lock

Assignee: CHEN TSUN-HSINGPriority: Aug 6, 1993Filed: Aug 6, 1993Granted: Nov 1, 1994

Est. expiryAug 6, 2013(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for digital or key card operated electronic door lock, as shown.

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