IP Library › Granted Patent US 4,305,895
Granted Patent Utility
US 4,305,895 · App. 06/147,061

Bubble cap and riser construction

Inventors: Rodney T. Heath, Richard G. Ayres
Patented Case View Patent ↗
Granted: Dec 15, 1981 Filed: May 5, 1980
Inventors
Rodney T. Heath
Richard G. Ayres

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Quick Facts
Patent No.
US 4,305,895
App. No.
06/147,061
Filed
1980-05-05
Granted
1981-12-15
Kind
A