IP Library › Granted Patent US 5,931,642
Granted Patent Utility
US 5,931,642 · App. 08/839,267

Plastic combined vacuum and holding tank

Inventors: William J. Friedman, James A. Sigler, Edward McKiernan
Patented Case View Patent ↗
Granted: Aug 3, 1999 Filed: Apr 17, 1997
Inventors
William J. Friedman
James A. Sigler
Edward McKiernan
Assignee (at issue)
BellandTechnology AG

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Quick Facts
Patent No.
US 5,931,642
App. No.
08/839,267
Filed
1997-04-17
Granted
1999-08-03
Kind
A