Dennis A. Oberlander

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Albertville, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Mass production auditory canal hearing aid
- Patent number 4,870,688
- Issue date Sep 26, 1989
- Barry Voroba
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Pair of hearing aids
- Patent number D297979
- Issue date Oct 4, 1988
- Voroba Technologies Associates
- Barry Voroba
- D24 - Medical and laboratory equipment