Rowland V. D. Firth III

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Austin, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-zone thermal print head
- Patent number 4,520,371
- Issue date May 28, 1985
- International Business Machines Corporation
- Rowland V. D. Firth
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible ribbon cartridge for a high speed impact printer
- Patent number 4,264,223
- Issue date Apr 28, 1981
- International Business Machines Corporation
- John D. Bemis
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Printer ribbon supply mechanism with end of ribbon detect expedient...
- Patent number 4,213,575
- Issue date Jul 22, 1980
- International Business Machines Corporation
- Rowland V. D. Firth
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS