Ernest H. Treff

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Groton, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Printing machine system, especially for printing on a web of heavy...
- Patent number 5,186,103
- Issue date Feb 16, 1993
- MAN Roland Druckmaschinen AG
- W. Robert Gelinas
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Delivery fan with undulated fan pockets
- Patent number 4,925,179
- Issue date May 15, 1990
- Harris Graphics Corporation
- Richard Breton
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Ink key control system
- Patent number 4,008,664
- Issue date Feb 22, 1977
- Harris-Intertype Corporation
- James N. Crum
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS