For the Inventor, By the Inventor

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Carpinteria, CA, United States of America

Dac Vision, Inc.

USPTO Granted Patents = 2

Trademarks = 8

Forward Citations = 21

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4 inventors (with patents filed for the assignee):

John R Keller (1 out of 7 patents)

Erik A Larsen (1 out of 3 patents)

S Keith Swanson (1 out of 2 patents)

4. Thomas E Nelson (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6074281 - Fining and polishing machine and method for ophthalmic lenses (2000-06-13),

2. 5593340 - Castable ophthalmic lens polishing lap and method (1997-01-14),

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USPTO Data Jan 1 1976 - Sep 22 2026

2 Patents

#38 in Carpinteria, CA

#20,966 in California

#94,680 in US

Carpinteria, CA, United States of America

Dac Vision, Inc.

Forward Citations = 21

4 inventors:

John R Keller (1 out of 7 patents)

Erik A Larsen (1 out of 3 patents)

S Keith Swanson (1 out of 2 patents)

4. Thomas E Nelson (1 out of 1 patent)

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