James J. Frimmel Jr.

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Reston, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Alternate memory addressing for information storage and retrieval
- Patent number 4,875,157
- Issue date Oct 17, 1989
- International Telesystems Corporation
- James J. Frimmel
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital voice recording and reproduction and telephone network sign...
- Patent number 4,829,514
- Issue date May 9, 1989
- International Telesystems Corporation
- James J. Frimmel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call management system with protocol converter and port controller
- Patent number 4,817,130
- Issue date Mar 28, 1989
- International Telesystems Corporation
- James J. Frimmel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of randomizing telephone numbers
- Patent number 4,741,028
- Issue date Apr 26, 1988
- International Telesystems Corporation
- James J. Frimmel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE