IP Library › Granted Patent US 4,697,657
Granted Patent Utility
US 4,697,657 · App. 06/931,660

Piezoelectric weighing device

Inventors: Joe L. Portman, Jr., David J. Margraf
Patented Case View Patent ↗
Granted: Oct 6, 1987 Filed: Nov 17, 1986
Inventors
Joe L. Portman, Jr.
David J. Margraf

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Quick Facts
Patent No.
US 4,697,657
App. No.
06/931,660
Filed
1986-11-17
Granted
1987-10-06
Kind
A