Lloyd D. Penn

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Johnstown, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Digital sweep circuit for generating sawtooth wave form
- Patent number 4,112,382
- Issue date Sep 5, 1978
- IRD Mechanalysis, Inc.
- Robert S. Morrow
- G01 - MEASURING TESTING
Information Patent Grant
Circuitry for generating a sine wave and/or cosine wave from a puls...
- Patent number 4,044,310
- Issue date Aug 23, 1977
- IRD Mechanalysis, Inc.
- Robert S. Morrow
- G01 - MEASURING TESTING
Information Patent Grant
Pulse signal conditioning circuit
- Patent number 4,035,733
- Issue date Jul 12, 1977
- IRD Mechanalysis, Inc.
- Robert S. Morrow
- G01 - MEASURING TESTING
Information Patent Grant
Combination balance analyzer and vibration spectrum analyzer
- Patent number 3,938,394
- Issue date Feb 17, 1976
- IRD Mechanalysis, Inc.
- Robert S. Morrow
- G01 - MEASURING TESTING