Elbert Du

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Cincinnati, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Pressure sensitive transfer media
- Patent number 4,211,826
- Issue date Jul 8, 1980
- Elbert Du
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Pressure sensitive magnetic image transfer media
- Patent number 4,132,835
- Issue date Jan 2, 1979
- Frye Copysystems, Inc.
- Elbert Du
- H01 - BASIC ELECTRIC ELEMENTS