Daniel S. Karvonen

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Mankato, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Secured pre-payment for portable communication unit
- Patent number 10,594,873
- Issue date Mar 17, 2020
- Precis Group LLC
- Peter D. Wendt
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Secured pre-payment for portable communication unit
- Patent number 10,218,859
- Issue date Feb 26, 2019
- Precis Group LLC
- Peter D. Wendt
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Secured pre-payment for portable communication unit
- Patent number 10,057,432
- Issue date Aug 21, 2018
- Peter D. Wendt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secured pre-payment for portable communication unit
- Patent number 9,813,564
- Issue date Nov 7, 2017
- Peter D. Wendt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secured pre-payment for portable communication unit
- Patent number 9,686,421
- Issue date Jun 20, 2017
- Peter D. Wendt
- H04 - ELECTRIC COMMUNICATION TECHNIQUE