IP Library › Granted Patent US 4,540,855
Granted Patent Utility
US 4,540,855 · App. 06/609,925

Detecting signals within a passband on a telephone line

Inventors: Aleksander Szlam, Chester P. Quinn
Patented Case View Patent ↗
Granted: Sep 10, 1985 Filed: May 14, 1984
Inventors
Aleksander Szlam
Chester P. Quinn
Assignee (at issue)
Melita Electronic Labs, Inc.

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Quick Facts
Patent No.
US 4,540,855
App. No.
06/609,925
Filed
1984-05-14
Granted
1985-09-10
Kind
A