John N. Johnston

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North Plainfield, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Tilt and swivel assembly for terminal monitor
- Patent number 4,731,030
- Issue date Mar 15, 1988
- Unisys Corporation
- John N. Johnston
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Calculator having a modular keyboard
- Patent number 4,333,155
- Issue date Jun 1, 1982
- Litton Business Systems, Inc.
- John N. Johnston
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Cartridge and bezel assembly for a calculator
- Patent number 4,323,979
- Issue date Apr 6, 1982
- Litton Business Systems, Inc.
- John N. Johnston
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Calculator printer having an acoustic noise suppressor
- Patent number 4,279,525
- Issue date Jul 21, 1981
- Litton Business Systems, Inc.
- John N. Johnston
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS