David A. Purcell

Person

San Diego, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Collapsible upright wheeled walker apparatus
- Patent number 10,828,226
- Issue date Nov 10, 2020
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Collapsible upright wheeled walker apparatus
- Patent number 10,588,815
- Issue date Mar 17, 2020
- Protostar, Inc.
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Wheeled walker wheel direction lock apparatus and method
- Patent number 10,555,866
- Issue date Feb 11, 2020
- Protostar, Inc., a Delaware Corporation
- Yichuan Pan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Collapsible upright wheeled walker apparatus
- Patent number 10,322,056
- Issue date Jun 18, 2019
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Collapsible upright wheeled walker apparatus
- Patent number 10,085,909
- Issue date Oct 2, 2018
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Collapsible upright wheeled walker apparatus
- Patent number 9,585,807
- Issue date Mar 7, 2017
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS
- Publication number 20200206068
- Publication date Jul 2, 2020
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS
- Publication number 20190254918
- Publication date Aug 22, 2019
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Wheeled Walker Wheel Direction Lock Apparatus and Method
- Publication number 20190105220
- Publication date Apr 11, 2019
- Protostar, Inc., a Delaware Corporation
- Yichuan Pan
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS
- Publication number 20180360686
- Publication date Dec 20, 2018
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS
- Publication number 20180280226
- Publication date Oct 4, 2018
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS
- Publication number 20170319424
- Publication date Nov 9, 2017
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
UPRIGHT WALKER HAVING A USER SAFETY SYSTEM EMPLOYING HAPTIC FEEDBACK
- Publication number 20170258664
- Publication date Sep 14, 2017
- Protostar, Inc., a Delaware Corporation
- David A. Purcell
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS
- Publication number 20160331626
- Publication date Nov 17, 2016
- Protostar, Inc., a Delaware Corporation
- Peter James Fellingham
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

David A. Purcell

Person

Patents Grantslast 30 patents

Collapsible upright wheeled walker apparatus

Collapsible upright wheeled walker apparatus

Wheeled walker wheel direction lock apparatus and method

Collapsible upright wheeled walker apparatus

Collapsible upright wheeled walker apparatus

Collapsible upright wheeled walker apparatus

Patents Applicationslast 30 patents

COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS

COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS

Wheeled Walker Wheel Direction Lock Apparatus and Method

COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS

COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS

COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS

UPRIGHT WALKER HAVING A USER SAFETY SYSTEM EMPLOYING HAPTIC FEEDBACK

COLLAPSIBLE UPRIGHT WHEELED WALKER APPARATUS