Ronald E. Graf

Person

Crozet, VA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Miniature fluid-controlled switch
- Patent number 4,371,753
- Issue date Feb 1, 1983
- Ronald E. Graf
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Droplet control aspects--ink evaporation reduction; low voltage con...
- Patent number 4,356,500
- Issue date Oct 26, 1982
- Ronald E. Graf
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Vortex chamber controlling combined entrance exit
- Patent number 4,286,627
- Issue date Sep 1, 1981
- Ronald E. Graf
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Droplet control aspects--ink evaporation reduction; low voltage con...
- Patent number 4,283,730
- Issue date Aug 11, 1981
- Ronald E. Graf
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrostatically controlled and segmented liquid ribbon
- Patent number 4,264,910
- Issue date Apr 28, 1981
- Ronald E. Graf
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Uncharged ink drop rastering, monitoring, and control
- Patent number 4,249,188
- Issue date Feb 3, 1981
- Ronald E. Graf
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Methods of making a sunlight admitting heat impeding panel
- Patent number 4,205,975
- Issue date Jun 3, 1980
- Ronald E. Graf
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Electrostatic switch
- Patent number 4,160,141
- Issue date Jul 3, 1979
- Ronald E. Graf
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrostatic switch
- Patent number 4,158,118
- Issue date Jun 12, 1979
- Ronald E. Graf
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sunlight admitting heat impeding panel
- Patent number 4,131,706
- Issue date Dec 26, 1978
- Ronald E. Graf
- F24 - HEATING RANGES VENTILATING

Ronald E. Graf

Person

Patents Grantslast 30 patents

Miniature fluid-controlled switch

Droplet control aspects--ink evaporation reduction; low voltage con...

Vortex chamber controlling combined entrance exit

Droplet control aspects--ink evaporation reduction; low voltage con...

Electrostatically controlled and segmented liquid ribbon

Uncharged ink drop rastering, monitoring, and control

Methods of making a sunlight admitting heat impeding panel

Electrostatic switch

Electrostatic switch

Sunlight admitting heat impeding panel