For the Inventor, By the Inventor

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Niwot, CO, United States of America

Bc Research and Development, Inc.

USPTO Granted Patents = 3

Forward Citations = 38

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4 inventors (with patents filed for the assignee):

Mark A Beran (3 out of 18 patents)

John K Fortin (1 out of 7 patents)

Allan J Evans (1 out of 1 patent)

4. Farrokh Fattahi (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. 5036620 - Safety enhanced pivoting door operator (1991-08-06),

2. 5021644 - Presence detecting apparatus and method for automatic doors (1991-06-04),

3. 4976065 - Control apparatus for doors (1990-12-11),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#10 in Niwot, CO

#1,717 in Colorado

#72,042 in US

Niwot, CO, United States of America

Bc Research and Development, Inc.

Forward Citations = 38

4 inventors:

Mark A Beran (3 out of 18 patents)

John K Fortin (1 out of 7 patents)

Allan J Evans (1 out of 1 patent)

4. Farrokh Fattahi (1 out of 2 patents)

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