Hildaur L. Neilsen

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Metuchen, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Rotary card holder
- Patent number 4,035,938
- Issue date Jul 19, 1977
- Rolodex Corporation
- Hildaur L. Neilsen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS