H. L. LEDEEN ASSOCIATES, INC.

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SUN VALLEY, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for locating a pressure transient source in a pipeline and a...
- Patent number 5,428,989
- Issue date Jul 4, 1995
- NKK Corporation
- James B. Jerde
- G01 - MEASURING TESTING
Information Patent Grant
Method for determining direction of travel of a wave front and appa...
- Patent number 5,398,542
- Issue date Mar 21, 1995
- NKK Corporation
- James E. Vasbinder
- G01 - MEASURING TESTING
Information Patent Grant
Low power valve actuator
- Patent number 5,085,401
- Issue date Feb 4, 1992
- H. L. Ledeen Associates
- Robert J. Botting
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

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Trademarklast 30 trademarks

Information Trademark
74549198 - RATE/DTECT P T
- Serial number 74549198
- Registration number 1939433
- Filing date Jul 14, 1994
- H.L. Ledeen Associates
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
74549147 - RATE/DTECT
- Serial number 74549147
- Filing date Jul 14, 1994
- H.L. Ledeen Associates
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
73772932 - LODYNE
- Serial number 73772932
- Registration number 1553487
- Filing date Dec 30, 1988
- H. L. LEDEEN ASSOCIATES, INC.
- 7 - Machines and machine tools