Jeffrey K. Hartman

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Bettendorf, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
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- Patent number 12,002,387
- Issue date Jun 4, 2024
- Spring Steel Stands Inc.
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
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- Patent number 10,283,021
- Issue date May 7, 2019
- Spring Steel Stands Inc.
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Sign post and sign system
- Patent number 10,037,718
- Issue date Jul 31, 2018
- Spring Steel Stands Inc.
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
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- Patent number 9,620,036
- Issue date Apr 11, 2017
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
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- Patent number 9,275,563
- Issue date Mar 1, 2016
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Sign post and sign system
- Patent number 9,269,282
- Issue date Feb 23, 2016
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
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- Publication number 20240331583
- Publication date Oct 3, 2024
- Spring Steel Stands Inc.
- Jeffrey K. Hartman
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS