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For the Inventor, By the Inventor

Cambridge, MA, United States of America

Lotus Development Coporation


USPTO Granted Patents = 1

Forward Citations = 75

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2 inventors (with patents filed for the assignee):

goldMedal Charles W Kaufman (1 out of 73 patents)

silverMedal Stephen M Matyas (1 out of 52 patents)


1 patent:

1. 5764772 - Differential work factor cryptography method and system (1998-06-09),
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USPTO Data Jan 1 1976 - Jan 20 2026

1 Patents

#715 in Cambridge, MA

#6,502 in Massachusetts

#134,345 in US

Cambridge, MA (US)
Cambridge, MA, United States of America

Lotus Development Coporation

Forward Citations = 75

2 inventors:

goldMedal Charles W Kaufman (1 out of 73 patents)

silverMedal Stephen M Matyas (1 out of 52 patents)

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