IP Library Granted Patent US 4,958,985
Granted Patent Utility
US 4,958,985 · App. 07/317,495

Performance low pressure end blading

Inventors: Joseph Davids, George J. Silvestri, Jr.
Patented Case View Patent ↗
Granted: Sep 25, 1990 Filed: Mar 1, 1989
Inventors
Joseph Davids
George J. Silvestri, Jr.
Assignee (at issue)
Westinghouse Electric Company LLC

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 4,958,985
App. No.
07/317,495
Filed
1989-03-01
Granted
1990-09-25
Kind
A