USD277558SExpiredUtility

Smoke detecting photoelectric sensing chamber

65
Assignee: ISOTEC INDUSTRIES LTDPriority: Jan 24, 1983Filed: Jan 24, 1983Granted: Feb 12, 1985
Est. expiryJan 24, 2003(expired)· nominal 20-yr term from priority
Inventors:John Mallory
65
PatentIndex Score
9
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a smoke detecting photoelectric sensing chamber, as shown.

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