IP Library › Granted Patent US 4,824,487
Granted Patent Utility
US 4,824,487 · App. 07/072,079

Cleaning of polyurethane foam reservoir

Inventor: Mary B. Heffernan
Patented Case View Patent ↗
Granted: Apr 25, 1989 Filed: Jul 10, 1987
Inventor
Mary B. Heffernan
Assignee (at issue)
Hewlett-Packard Company, L.P.

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Quick Facts
Patent No.
US 4,824,487
App. No.
07/072,079
Filed
1987-07-10
Granted
1989-04-25
Kind
A