DAVID A. HARPER

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Saint Paul, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Hybrid self illuminated and actively back lit signage for printed g...
- Patent number 9,208,704
- Issue date Dec 8, 2015
- 3M Innovative Properties Company
- Erik A. Aho
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Hybrid self illuminated and actively back lit signage for printed g...
- Patent number 9,070,312
- Issue date Jun 30, 2015
- 3M Innovative Properties Company
- Erik A. Aho
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
On-product projection for digital merchandizing
- Patent number 8,919,969
- Issue date Dec 30, 2014
- 3M Innovative Properties Company
- Rolf W. Biernath
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
HYBRID SELF ILLUMINATED AND ACTIVELY BACK LIT SIGNAGE FOR PRINTED G...
- Publication number 20150262517
- Publication date Sep 17, 2015
- 3M Innovative Properties Company
- Erik A. Aho
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
HYBRID SELF ILLUMINATED AND ACTIVELY BACK LIT SIGNAGE FOR PRINTED G...
- Publication number 20150121732
- Publication date May 7, 2015
- 3M Innovative Properties Company
- ERIK A. AHO
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
ON-PRODUCT PROJECTION FOR DIGITAL MERCHANDIZING
- Publication number 20140146289
- Publication date May 29, 2014
- 3M Innovative Properties Company
- Rolf W. Biernath
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS