William Brooks Frederick

Follow

Person

Winona Lake, IN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Expandable backup ring
- Patent number 11,066,896
- Issue date Jul 20, 2021
- Parker-Hannifin Corporation
- Timothy David Heiman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Variable height backup assembly for articulating boots
- Patent number 10,247,311
- Issue date Apr 2, 2019
- Parker-Hannifin Corporation
- William Brooks Frederick
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
EXPANDABLE BACKUP RING
- Publication number 20190360297
- Publication date Nov 28, 2019
- Parker-Hannifin Corporation
- Timothy David Heiman
- E21 - EARTH DRILLING MINING
Information Patent Application
VARIABLE HEIGHT BACKUP ASSEMBLY FOR ARTICULATING BOOTS
- Publication number 20160356115
- Publication date Dec 8, 2016
- Parker-Hannifin Corporation
- William Brooks Frederick
- E21 - EARTH DRILLING MINING