IP Library › Granted Patent US 4,694,482
Granted Patent Utility
US 4,694,482 · App. 06/921,526

Digital tone detector

Inventors: Gordon J. Reesor, Patrick R. Beirne, Zbigniew B. Styrna
Patented Case View Patent ↗
Granted: Sep 15, 1987 Filed: Oct 22, 1986
Inventors
Gordon J. Reesor
Patrick R. Beirne
Zbigniew B. Styrna
Assignee (at issue)
Mitel Corporation

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Quick Facts
Patent No.
US 4,694,482
App. No.
06/921,526
Filed
1986-10-22
Granted
1987-09-15
Kind
A