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Germantown, MD, United States of America

Earl L Mannas

Average Co-Inventor Count = 2.00

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 5

Earl L MannasWilliam Christopher Hardy (3 patents)Earl L MannasEarl L Mannas (3 patents)William Christopher HardyWilliam Christopher Hardy (29 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mci Communications Corporation (3 from 473 patents)


3 patents:

1. 6580782 - Interactive telephone response module

2. 6385296 - System to test a connection in a telephone network

3. 6108404 - Method and system for testing a connection in a telephone network using

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12/25/2025
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