IP Library Granted Patent US 4,288,909
Granted Patent Utility
US 4,288,909 · App. 05/954,438

Automatic tool changer for machine tool

Inventors: Ervin J. Kielma, Albin J. Schabowski, John T. Currer
Patented Case View Patent ↗
Granted: Sep 15, 1981 Filed: Oct 25, 1978
Inventors
Ervin J. Kielma
Albin J. Schabowski
John T. Currer
Assignee (at issue)
Kearney & Trecker 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 4,288,909
App. No.
05/954,438
Filed
1978-10-25
Granted
1981-09-15
Kind
A