IP Library › Granted Patent US 4,688,464
Granted Patent Utility
US 4,688,464 · App. 06/820,756

Pitch detection apparatus

Inventors: Brian C. Gibson, George J. Spark
Patented Case View Patent ↗
Granted: Aug 25, 1987 Filed: Jan 16, 1986
Inventors
Brian C. Gibson
George J. Spark
Assignee (at issue)
IVL Technologies Ltd.

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Quick Facts
Patent No.
US 4,688,464
App. No.
06/820,756
Filed
1986-01-16
Granted
1987-08-25
Kind
A