For the Inventor, By the Inventor

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Parramatta, Australia

Australian and Overseas Telecommunications Corp. Limited

USPTO Granted Patents = 3

Forward Citations = 155

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4 inventors (with patents filed for the assignee):

Calvin Jonathan Stein (1 out of 3 patents)

Stephen B Meads (1 out of 1 patent)

Gideon W Yoffe (1 out of 1 patent)

4. John M Dell (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 5519770 - Enhanced telephony apparatus and system (1996-05-21),

2. 5386137 - Electro-optic device (1995-01-31),

3. 5272747 - Mobile pay telephone system (1993-12-21),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#1 in Parramatta

#1,367 in Australia

Parramatta, Australia

Australian and Overseas Telecommunications Corp. Limited

Forward Citations = 155

4 inventors:

Calvin Jonathan Stein (1 out of 3 patents)

Stephen B Meads (1 out of 1 patent)

Gideon W Yoffe (1 out of 1 patent)

4. John M Dell (1 out of 1 patent)

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