IP Library › Granted Patent US 4,331,511
Granted Patent Utility
US 4,331,511 · App. 06/148,368

Paper making machine foil having low disturbance profile and self-sharpening tip

Inventors: Denis A. Goddard, Robert L. Wallis
Patented Case View Patent ↗
Granted: May 25, 1982 Filed: May 9, 1980
Inventors
Denis A. Goddard
Robert L. Wallis
Assignee (at issue)
Beloit Corporation

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,331,511
App. No.
06/148,368
Filed
1980-05-09
Granted
1982-05-25
Kind
A