Ralph E. Zum Bahlen

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Chicago, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Shorthand machine having electric platen advancement
- Patent number 4,421,427
- Issue date Dec 20, 1983
- Stenograph Corporation
- Richard A. Michals
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Shorthand machine having electric platen advancement
- Patent number 4,363,558
- Issue date Dec 14, 1982
- Stenograph Corporation
- Richard A. Michals
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Shorthand machine paper gauge
- Patent number 4,323,316
- Issue date Apr 6, 1982
- Stenograph Corporation
- Paul J. Fowler
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS