Robert C. Hoffman

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Park Ridge, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Teleprinter having single belt carriage and ribbon drive system
- Patent number 4,300,847
- Issue date Nov 17, 1981
- Qwint Systems, Inc.
- Robert C. Hoffman
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Dot matrix print head
- Patent number 4,300,845
- Issue date Nov 17, 1981
- Qwint Systems, Inc.
- Donald P. Martin
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS