IP Library › Granted Patent US 5,167,928
Granted Patent Utility
US 5,167,928 · App. 07/465,898

Laboratory shaker apparatus

Inventors: James P. Kelly, Texas Gehlhardt, Keith Hoffer
Patented Case View Patent ↗
Granted: Dec 1, 1992 Filed: Jan 16, 1990
Inventors
James P. Kelly
Texas Gehlhardt
Keith Hoffer

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 5,167,928
App. No.
07/465,898
Filed
1990-01-16
Granted
1992-12-01
Kind
A