WILLIAM FORREST OLSON
Pilots in Sherwood, OR
License number
Oregon A2893884
Issued Date
May 2016
Expiration Date
May 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
PO Box 458, Sherwood, OR 97140
Professional information
Electric Heating Apparatus For Foundry Ladle
US Patent:
4304986, Dec 8, 1981
Filed:
Jul 21, 1980
Appl. No.:
6/170778
Inventors:
William E. Olson - Sherwood OR
Assignee:
ESCO Corporation - Portland OR
International Classification:
H05B 306
US Classification:
219523
Abstract:
An electric heater for a foundry ladle wherein a frame is equipped with a descending electric heater operated and controlled to preserve the integrity of the electric heater.