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Patents Grants
last 30 patents
Information
Patent Grant
Method of and apparatus for detecting cross sectional area variatio...
Patent number
5,036,277
Issue date
Jul 30, 1991
Crucible Societe Anonyme
Nicolaas T. van der Walt
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for detecting cross sectional area variations...
Patent number
4,929,897
Issue date
May 29, 1990
Crucible Societe Anonyme
Nicholaas T. Van Der Walt
G01 - MEASURING TESTING
Information
Patent Grant
Letdown valves
Patent number
4,892,289
Issue date
Jan 9, 1990
Crucible Societe Anonyme
Barney Van Dyk Burckard
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Method of and apparatus for magnetic saturation testing a wire rope...
Patent number
4,827,215
Issue date
May 2, 1989
Crucible, Societe Anonyme
Nicolaas T. van der Walt
G01 - MEASURING TESTING
Information
Patent Grant
Mine hoist control method and apparatus
Patent number
4,761,589
Issue date
Aug 2, 1988
Crucible Societe Anonyme
Lindo Hauptfleisch
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Grinding mill control
Patent number
4,722,485
Issue date
Feb 2, 1988
Crucible Societe Anonyme
Guy J. C. Young
B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information
Patent Grant
Transistor base drive circuit
Patent number
4,684,879
Issue date
Aug 4, 1987
Crucible, Societe Anonyme
Gordon L. Bredenkamp
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
High frequency self-oscillating welding apparatus
Patent number
4,520,255
Issue date
May 28, 1985
Crucible Societe Anonyme
Gordon L. Bredenkamp
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
High frequency welding apparatus
Patent number
4,453,073
Issue date
Jun 5, 1984
Crucible Societe Anonyme
Gordon L. Bredenkamp
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
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