IP Library › Granted Patent US 4,919,538
Granted Patent Utility
US 4,919,538 · App. 07/385,556

Drum mixer having a combined mixing and heating zone

Inventor: George W. Swisher, Jr.
Patented Case View Patent ↗
Granted: Apr 24, 1990 Filed: Jul 26, 1989
Inventor
George W. Swisher, Jr.

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Quick Facts
Patent No.
US 4,919,538
App. No.
07/385,556
Filed
1989-07-26
Granted
1990-04-24
Kind
A