BRANCH HOURS UPDATE:

From Feb. 23-26 and March 2-6, the Patience S. Latting Northwest Library will close at 7 p.m. for carpet replacement.

Lloyd-Avon Ltd. - Hellbat Ultrasonic Patents

Lloyd-Avon Ltd. - Hellbat Ultrasonic Patents
Lloyd-Avon Ltd. - Hellbat Ultrasonic Patents

Description:

The materials in this collection are for study and research purposes only. To use these digital files in any form, please use the credit "Courtesy of Metropolitan Library System of Oklahoma County" to accompany the image.