Amtelco (American Tel-A-Systems, Inc.

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McFarland, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Computer data entry method and apparatus
- Patent number 4,737,980
- Issue date Apr 12, 1988
- Amtelco
- William J. Curtin
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Telephone line concentrator without switching matrix
- Patent number 4,674,116
- Issue date Jun 16, 1987
- Amtelco
- William J. Curtin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

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