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For the Inventor, By the Inventor

St. Petersburg, FL, United States of America

B Optical


USPTO Granted Patents = 2

Forward Citations = 4

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2 inventors (with patents filed for the assignee):

goldMedal Marvin P Hodges (2 out of 11 patents)

silverMedal Richard A Buchroeder (1 out of 17 patents)


2 patents:

1. 4457594 - Fresnel lens projection system with high gain screen (1984-07-03),
2. 4398810 - Fresnel lens system (1983-08-16),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#83 in St. Petersburg, FL

#3,676 in Florida

#94,730 in US

St. Petersburg, FL (US)
St. Petersburg, FL, United States of America

B Optical

Forward Citations = 4

2 inventors:

goldMedal Marvin P Hodges (2 out of 11 patents)

silverMedal Richard A Buchroeder (1 out of 17 patents)

Please report any incorrect information to [email protected]
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