Duwayne E. Kramer Jr.

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Lake Quivera, KS, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable wheelchair anti-tip assembly
- Patent number 6,494,474
- Issue date Dec 17, 2002
- Burke Mobility Products, Inc.
- DuWayne E. Kramer
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Front wheel/rear wheel drive convertible wheelchair
- Patent number 6,290,011
- Issue date Sep 18, 2001
- Burke Mobility Products, Inc.
- John T. Langaker
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Powered wheelchair with separating frame
- Patent number 6,220,382
- Issue date Apr 24, 2001
- Burke Mobility Products, Inc.
- Duwayne E. Kramer
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Tiller assembly for personal mobility vehicles
- Patent number 5,816,614
- Issue date Oct 6, 1998
- Burke, Inc.
- DuWayne E. Kramer
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Personal mobility vehicle with expansible wheel base and wheel track
- Patent number 4,834,409
- Issue date May 30, 1989
- DuWayne E. Kramer
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Personal mobility vehicle
- Patent number 4,570,739
- Issue date Feb 18, 1986
- Burke, Inc.
- DuWayne E. Kramer
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
Personal mobility vehicle with anti-tip suspension
- Publication number 20070290492
- Publication date Dec 20, 2007
- Burke, Inc.
- DuWayne E. Kramer
- B60 - VEHICLES IN GENERAL
Information Patent Application
Multipositional bariatric bed
- Publication number 20070089238
- Publication date Apr 26, 2007
- Leisure-Lift, Inc.
- DuWayne E. Kramer
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE