IP Library Granted Patent US 4,623,921
Granted Patent Utility
US 4,623,921 · App. 06/739,431

Antenna diplexer utilizing aural input for visual service

Inventors: Anthony Schmitz, Joseph J. Matta
Patented Case View Patent ↗
Granted: Nov 18, 1986 Filed: May 30, 1985
Inventors
Anthony Schmitz
Joseph J. Matta
Assignee (at issue)
Federal Signal Corporation

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Quick Facts
Patent No.
US 4,623,921
App. No.
06/739,431
Filed
1985-05-30
Granted
1986-11-18
Kind
A