IP Library › Granted Patent US 4,490,857
Granted Patent Utility
US 4,490,857 · App. 06/433,735

Band earplug

Inventors: Howard S. Leight, Alan Rosen
Patented Case View Patent ↗
Granted: Jan 1, 1985 Filed: Oct 12, 1982
Inventors
Howard S. Leight
Alan Rosen

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Quick Facts
Patent No.
US 4,490,857
App. No.
06/433,735
Filed
1982-10-12
Granted
1985-01-01
Kind
A