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For the Inventor, By the Inventor

Orion, MI, United States of America

Effikal International, Inc.


USPTO Granted Patents = 3

Forward Citations = 55

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2 inventors (with patents filed for the assignee):

goldMedal Cory Allan Weiss (3 out of 12 patents)

silverMedal Paul W Droll (1 out of 1 patent)


3 patents:

1. 6644957 - Damper control device (2003-11-11),
2. 6439877 - Control device for a gas-fired appliance (2002-08-27),
3. 6257871 - Control device for a gas-fired appliance (2001-07-10),
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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#5 in Orion, MI

#2,448 in Michigan

#72,025 in US

...
Orion, MI, United States of America

Effikal International, Inc.

Forward Citations = 55

2 inventors:

goldMedal Cory Allan Weiss (3 out of 12 patents)

silverMedal Paul W Droll (1 out of 1 patent)

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