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Dale A. Steffen
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Aurora, CO, US
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Patents Grants
last 30 patents
Information
Patent Grant
Low voltage signal stripping circuit for an RFID reader
Patent number
7,559,477
Issue date
Jul 14, 2009
Assa Abloy AB
Dale A. Steffen
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Low voltage signal stripping circuit for an RFID reader
Patent number
7,124,942
Issue date
Oct 24, 2006
HID Corporation
Dale A. Steffen
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Vital signs monitoring system
Patent number
4,270,547
Issue date
Jun 2, 1981
University Patents, Inc.
Dale A. Steffen
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Method and apparatus for monitoring the position of the eye
Patent number
4,145,122
Issue date
Mar 20, 1979
Colorado Seminary
George A. Rinard
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Patents Applications
last 30 patents
Information
Patent Application
Low voltage signal stripping circuit for an RFID reader
Publication number
20070001008
Publication date
Jan 4, 2007
HID Corporation
Dale A. Steffen
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Low voltage signal stripping circuit for an RFID reader
Publication number
20050121518
Publication date
Jun 9, 2005
Dale A. Steffen
G06 - COMPUTING CALCULATING COUNTING