Ivan B. Helmrich

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Kansas City, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for producing light and sound
- Patent number 11,499,706
- Issue date Nov 15, 2022
- Hallmark Cards, Incorporated
- Jason B. Penrod
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cover for an illumination device
- Patent number D782103
- Issue date Mar 21, 2017
- Hallmark Cards, Incorporated
- Christopher J. Shields
- D26 - Lighting