John W. Fennel Jr.

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Olney, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Encryption using destination addresses in a TDMA satellite communic...
- Patent number 4,418,425
- Issue date Nov 29, 1983
- IBM Corporation
- John W. Fennel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Baton passing method and apparatus for maintaining synchronization...
- Patent number 4,397,018
- Issue date Aug 2, 1983
- IBM Corporation
- John W. Fennel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Demand assignment technique for TDMA satellite communication network
- Patent number 4,322,845
- Issue date Mar 30, 1982
- IBM Corporation
- John W. Fennel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus to reduce the effect of a mid-talkspurt freeze-out
- Patent number 4,295,217
- Issue date Oct 13, 1981
- IBM Corporation
- John W. Fennel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE