Electronic Environmental Controls Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5475364 Room occupancy fire alarm indicator means and methodExpiredApr 28, 94Dec 12, 95[G08B]
5309146 Room occupancy indicator means and methodExpiredSep 24, 92May 03, 94[G08B]
5165465 Room control systemExpiredJan 25, 90Nov 24, 92[F25B]

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