IP Library › Granted Patent US 4,638,357
Granted Patent Utility
US 4,638,357 · App. 06/572,445

Audio scrambler

Inventor: Paul Heimbach
Patented Case View Patent ↗
Granted: Jan 20, 1987 Filed: Jan 20, 1984
Inventor
Paul Heimbach
Assignee (at issue)
HOME BOX OFFICE, INC.

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Quick Facts
Patent No.
US 4,638,357
App. No.
06/572,445
Filed
1984-01-20
Granted
1987-01-20
Kind
A