IP Library Granted Patent US 4,259,870
Granted Patent Utility
US 4,259,870 · App. 06/015,404

Doppler method of measuring flow

Inventors: Francis McLeod, Spencer Silverstein, Robert J. Kurtz
Patented Case View Patent ↗
Granted: Apr 7, 1981 Filed: Feb 26, 1979
Inventors
Francis McLeod
Spencer Silverstein
Robert J. Kurtz
Assignee (at issue)
Howmedica Inc.

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 4,259,870
App. No.
06/015,404
Filed
1979-02-26
Granted
1981-04-07
Kind
A